diff --git a/src/auction.js b/src/auction.js
index a77708486f2..a96bfadeb06 100644
--- a/src/auction.js
+++ b/src/auction.js
@@ -456,17 +456,17 @@ export function getStandardBidderSettings(mediaType) {
   if (!bidderSettings[CONSTANTS.JSON_MAPPING.BD_SETTING_STANDARD][CONSTANTS.JSON_MAPPING.ADSERVER_TARGETING]) {
     bidderSettings[CONSTANTS.JSON_MAPPING.BD_SETTING_STANDARD][CONSTANTS.JSON_MAPPING.ADSERVER_TARGETING] = [
       {
-        key: 'hb_bidder',
+        key: CONSTANTS.TARGETING_KEYS.BIDDER,
         val: function (bidResponse) {
           return bidResponse.bidderCode;
         }
       }, {
-        key: 'hb_adid',
+        key: CONSTANTS.TARGETING_KEYS.AD_ID,
         val: function (bidResponse) {
           return bidResponse.adId;
         }
       }, {
-        key: 'hb_pb',
+        key: CONSTANTS.TARGETING_KEYS.PRICE_BUCKET,
         val: function (bidResponse) {
           if (granularity === CONSTANTS.GRANULARITY_OPTIONS.AUTO) {
             return bidResponse.pbAg;
@@ -483,24 +483,24 @@ export function getStandardBidderSettings(mediaType) {
           }
         }
       }, {
-        key: 'hb_size',
+        key: CONSTANTS.TARGETING_KEYS.SIZE,
         val: function (bidResponse) {
           return bidResponse.size;
         }
       }, {
-        key: 'hb_deal',
+        key: CONSTANTS.TARGETING_KEYS.DEAL,
         val: function (bidResponse) {
           return bidResponse.dealId;
         }
       },
       {
-        key: 'hb_source',
+        key: CONSTANTS.TARGETING_KEYS.SOURCE,
         val: function (bidResponse) {
           return bidResponse.source;
         }
       },
       {
-        key: 'hb_format',
+        key: CONSTANTS.TARGETING_KEYS.FORMAT,
         val: function (bidResponse) {
           return bidResponse.mediaType;
         }
@@ -561,7 +561,7 @@ function setKeys(keyValues, bidderSettings, custBidObj) {
 
     if (
       ((typeof bidderSettings.suppressEmptyKeys !== 'undefined' && bidderSettings.suppressEmptyKeys === true) ||
-      key === 'hb_deal') && // hb_deal is suppressed automatically if not set
+      key === CONSTANTS.TARGETING_KEYS.DEAL) && // hb_deal is suppressed automatically if not set
       (
         utils.isEmptyStr(value) ||
         value === null ||
diff --git a/src/constants.json b/src/constants.json
index 3bbad70585a..9ec51e4047b 100644
--- a/src/constants.json
+++ b/src/constants.json
@@ -55,15 +55,24 @@
     "DENSE": "dense",
     "CUSTOM": "custom"
   },
-  "TARGETING_KEYS": [
-    "hb_bidder",
-    "hb_adid",
-    "hb_pb",
-    "hb_size",
-    "hb_deal",
-    "hb_source",
-    "hb_format"
-  ],
+  "TARGETING_KEYS": {
+    "BIDDER": "hb_bidder",
+    "AD_ID": "hb_adid",
+    "PRICE_BUCKET": "hb_pb",
+    "SIZE": "hb_size",
+    "DEAL": "hb_deal",
+    "SOURCE": "hb_source",
+    "FORMAT": "hb_format"
+  },
+  "NATIVE_KEYS": {
+    "title": "hb_native_title",
+    "body": "hb_native_body",
+    "sponsoredBy": "hb_native_brand",
+    "image": "hb_native_image",
+    "icon": "hb_native_icon",
+    "clickUrl": "hb_native_linkurl",
+    "cta": "hb_native_cta"
+  },
   "S2S" : {
     "SRC" : "s2s",
     "DEFAULT_ENDPOINT" : "https://prebid.adnxs.com/pbs/v1/openrtb2/auction",
diff --git a/src/native.js b/src/native.js
index 3d2ec2fe688..b4d2d959b70 100644
--- a/src/native.js
+++ b/src/native.js
@@ -1,20 +1,12 @@
 import { deepAccess, getBidRequest, logError, triggerPixel, insertHtmlIntoIframe } from './utils';
 import includes from 'core-js/library/fn/array/includes';
 
-export const nativeAdapters = [];
+const CONSTANTS = require('./constants.json');
 
-export const NATIVE_KEYS = {
-  title: 'hb_native_title',
-  body: 'hb_native_body',
-  sponsoredBy: 'hb_native_brand',
-  image: 'hb_native_image',
-  icon: 'hb_native_icon',
-  clickUrl: 'hb_native_linkurl',
-  cta: 'hb_native_cta',
-};
+export const nativeAdapters = [];
 
-export const NATIVE_TARGETING_KEYS = Object.keys(NATIVE_KEYS).map(
-  key => NATIVE_KEYS[key]
+export const NATIVE_TARGETING_KEYS = Object.keys(CONSTANTS.NATIVE_KEYS).map(
+  key => CONSTANTS.NATIVE_KEYS[key]
 );
 
 const IMAGE = {
@@ -163,7 +155,7 @@ export function getNativeTargeting(bid) {
   let keyValues = {};
 
   Object.keys(bid['native']).forEach(asset => {
-    const key = NATIVE_KEYS[asset];
+    const key = CONSTANTS.NATIVE_KEYS[asset];
     let value = bid['native'][asset];
 
     // native image-type assets can be a string or an object with a url prop
diff --git a/src/targeting.js b/src/targeting.js
index 4bd3adbd9fc..8cb567001d5 100644
--- a/src/targeting.js
+++ b/src/targeting.js
@@ -15,6 +15,10 @@ export const RENDERED = 'rendered';
 const MAX_DFP_KEYLENGTH = 20;
 const TTL_BUFFER = 1000;
 
+export const TARGETING_KEYS = Object.keys(CONSTANTS.TARGETING_KEYS).map(
+  key => CONSTANTS.TARGETING_KEYS[key]
+);
+
 // return unexpired bids
 export const isBidNotExpired = (bid) => (bid.responseTimestamp + bid.ttl * 1000 + TTL_BUFFER) > timestamp();
 
@@ -262,7 +266,7 @@ export function newTargeting(auctionManager) {
           .reduce((acc, key) => {
             const targetingValue = [winner.adserverTargeting[key]];
             const targeting = { [key.substring(0, MAX_DFP_KEYLENGTH)]: targetingValue };
-            if (key === 'hb_deal') {
+            if (key === CONSTANTS.TARGETING_KEYS.DEAL) {
               const bidderCodeTargetingKey = `${key}_${winner.bidderCode}`.substring(0, MAX_DFP_KEYLENGTH);
               const bidderCodeTargeting = { [bidderCodeTargetingKey]: targetingValue };
               return [...acc, targeting, bidderCodeTargeting];
@@ -278,7 +282,7 @@ export function newTargeting(auctionManager) {
   function getStandardKeys() {
     return auctionManager.getStandardBidderAdServerTargeting() // in case using a custom standard key set
       .map(targeting => targeting.key)
-      .concat(CONSTANTS.TARGETING_KEYS).filter(uniques); // standard keys defined in the library.
+      .concat(TARGETING_KEYS).filter(uniques); // standard keys defined in the library.
   }
 
   /**
@@ -360,7 +364,7 @@ export function newTargeting(auctionManager) {
    * @return {targetingArray}   all non-winning bids targeting
    */
   function getBidLandscapeTargeting(adUnitCodes, bidsReceived) {
-    const standardKeys = CONSTANTS.TARGETING_KEYS.concat(NATIVE_TARGETING_KEYS);
+    const standardKeys = TARGETING_KEYS.concat(NATIVE_TARGETING_KEYS);
 
     const bids = getHighestCpmBidsFromBidPool(bidsReceived, getHighestCpm);
 
diff --git a/test/fixtures/fixtures.js b/test/fixtures/fixtures.js
index 75d998d4a09..816363f5eea 100644
--- a/test/fixtures/fixtures.js
+++ b/test/fixtures/fixtures.js
@@ -1,4 +1,33 @@
 // jscs:disable
+import CONSTANTS from 'src/constants.json';
+const utils = require('src/utils.js');
+
+function convertTargetingsFromOldToNew(targetings) {
+  var mapOfOldToNew = {
+    'hb_bidder': CONSTANTS.TARGETING_KEYS.BIDDER,
+    'hb_adid': CONSTANTS.TARGETING_KEYS.AD_ID,
+    'hb_pb': CONSTANTS.TARGETING_KEYS.PRICE_BUCKET,
+    'hb_size': CONSTANTS.TARGETING_KEYS.SIZE,
+    'hb_deal': CONSTANTS.TARGETING_KEYS.DEAL,
+    'hb_source': CONSTANTS.TARGETING_KEYS.SOURCE,
+    'hb_format': CONSTANTS.TARGETING_KEYS.FORMAT
+  };
+  var newTargetings = {};
+  utils._each(targetings, function(value, currentKey) {
+    var replaced = false;
+    utils._each(mapOfOldToNew, function(newKey, oldKey) {
+      if (currentKey.indexOf(oldKey) === 0 && oldKey !== newKey) {
+        var updatedKey = currentKey.replace(oldKey, newKey);
+        newTargetings[updatedKey] = targetings[currentKey];
+        replaced = true;
+      }
+    });
+    if (!replaced) {
+      newTargetings[currentKey] = targetings[currentKey];
+    }
+  })
+  return newTargetings;
+}
 
 export function getBidRequests() {
   return [
@@ -311,13 +340,13 @@ export function getBidResponses() {
       'pbAg': '0.10',
       'size': '0x0',
       'auctionId': 123456,
-      'adserverTargeting': {
+      'adserverTargeting': convertTargetingsFromOldToNew({
         'hb_bidder': 'triplelift',
         'hb_adid': '222bb26f9e8bd',
         'hb_pb': '10.00',
         'hb_size': '0x0',
         'foobar': '0x0'
-      },
+      }),
       'netRevenue': true,
       'currency': 'USD',
       'ttl': 300
@@ -343,13 +372,13 @@ export function getBidResponses() {
       'size': '300x250',
       'alwaysUseBid': true,
       'auctionId': 123456,
-      'adserverTargeting': {
+      'adserverTargeting': convertTargetingsFromOldToNew({
         'hb_bidder': 'appnexus',
         'hb_adid': '233bcbee889d46d',
         'hb_pb': '10.00',
         'hb_size': '300x250',
         'foobar': '300x250'
-      },
+      }),
       'netRevenue': true,
       'currency': 'USD',
       'ttl': 300
@@ -375,13 +404,13 @@ export function getBidResponses() {
       'size': '728x90',
       'alwaysUseBid': true,
       'auctionId': 123456,
-      'adserverTargeting': {
+      'adserverTargeting': convertTargetingsFromOldToNew({
         'hb_bidder': 'appnexus',
         'hb_adid': '24bd938435ec3fc',
         'hb_pb': '10.00',
         'hb_size': '728x90',
         'foobar': '728x90'
-      },
+      }),
       'netRevenue': true,
       'currency': 'USD',
       'ttl': 300
@@ -406,13 +435,13 @@ export function getBidResponses() {
       'pbAg': '0.50',
       'size': '300x250',
       'auctionId': 123456,
-      'adserverTargeting': {
+      'adserverTargeting': convertTargetingsFromOldToNew({
         'hb_bidder': 'pagescience',
         'hb_adid': '25bedd4813632d7',
         'hb_pb': '10.00',
         'hb_size': '300x250',
         'foobar': '300x250'
-      },
+      }),
       'netRevenue': true,
       'currency': 'USD',
       'ttl': 300
@@ -436,13 +465,13 @@ export function getBidResponses() {
       'pbAg': '0.15',
       'size': '300x250',
       'auctionId': 654321,
-      'adserverTargeting': {
+      'adserverTargeting': convertTargetingsFromOldToNew({
         'hb_bidder': 'brightcom',
         'hb_adid': '26e0795ab963896',
         'hb_pb': '10.00',
         'hb_size': '300x250',
         'foobar': '300x250'
-      },
+      }),
       'netRevenue': true,
       'currency': 'USD',
       'ttl': 300
@@ -467,13 +496,13 @@ export function getBidResponses() {
       'pbAg': '0.50',
       'size': '300x250',
       'auctionId': 654321,
-      'adserverTargeting': {
+      'adserverTargeting': convertTargetingsFromOldToNew({
         'hb_bidder': 'brealtime',
         'hb_adid': '275bd666f5a5a5d',
         'hb_pb': '10.00',
         'hb_size': '300x250',
         'foobar': '300x250'
-      },
+      }),
       'netRevenue': true,
       'currency': 'USD',
       'ttl': 300
@@ -499,13 +528,13 @@ export function getBidResponses() {
       'pbAg': '5.90',
       'size': '300x250',
       'auctionId': 654321,
-      'adserverTargeting': {
+      'adserverTargeting': convertTargetingsFromOldToNew({
         'hb_bidder': 'pubmatic',
         'hb_adid': '28f4039c636b6a7',
         'hb_pb': '10.00',
         'hb_size': '300x250',
         'foobar': '300x250'
-      },
+      }),
       'netRevenue': true,
       'currency': 'USD',
       'ttl': 300
@@ -529,13 +558,13 @@ export function getBidResponses() {
       'pbAg': '2.70',
       'size': '300x600',
       'auctionId': 654321,
-      'adserverTargeting': {
+      'adserverTargeting': convertTargetingsFromOldToNew({
         'hb_bidder': 'rubicon',
         'hb_adid': '29019e2ab586a5a',
         'hb_pb': '10.00',
         'hb_size': '300x600',
         'foobar': '300x600'
-      },
+      }),
       'netRevenue': true,
       'currency': 'USD',
       'ttl': 300
@@ -546,26 +575,26 @@ export function getBidResponses() {
 export function getSlotTargeting() {
   return {
     '/19968336/header-bid-tag-0': [
-      {
+      convertTargetingsFromOldToNew({
         'hb_bidder': [
           'appnexus'
         ]
-      },
-      {
+      }),
+      convertTargetingsFromOldToNew({
         'hb_adid': [
           '233bcbee889d46d'
         ]
-      },
-      {
+      }),
+      convertTargetingsFromOldToNew({
         'hb_pb': [
           '10.00'
         ]
-      },
-      {
+      }),
+      convertTargetingsFromOldToNew({
         'hb_size': [
           '300x250'
         ]
-      },
+      }),
       {
         'foobar': [
           '300x250'
@@ -1033,13 +1062,13 @@ export function getBidResponsesFromAPI() {
           'pbAg': '0.15',
           'size': '300x250',
           'auctionId': 654321,
-          'adserverTargeting': {
+          'adserverTargeting': convertTargetingsFromOldToNew({
             'hb_bidder': 'brightcom',
             'hb_adid': '26e0795ab963896',
             'hb_pb': '10.00',
             'hb_size': '300x250',
             'foobar': '300x250'
-          },
+          }),
           'netRevenue': true,
           'currency': 'USD',
           'ttl': 300
@@ -1064,13 +1093,13 @@ export function getBidResponsesFromAPI() {
           'pbAg': '0.50',
           'size': '300x250',
           'auctionId': 654321,
-          'adserverTargeting': {
+          'adserverTargeting': convertTargetingsFromOldToNew({
             'hb_bidder': 'brealtime',
             'hb_adid': '275bd666f5a5a5d',
             'hb_pb': '10.00',
             'hb_size': '300x250',
             'foobar': '300x250'
-          },
+          }),
           'netRevenue': true,
           'currency': 'USD',
           'ttl': 300
@@ -1096,13 +1125,13 @@ export function getBidResponsesFromAPI() {
           'pbAg': '5.90',
           'size': '300x250',
           'auctionId': 654321,
-          'adserverTargeting': {
+          'adserverTargeting': convertTargetingsFromOldToNew({
             'hb_bidder': 'pubmatic',
             'hb_adid': '28f4039c636b6a7',
             'hb_pb': '10.00',
             'hb_size': '300x250',
             'foobar': '300x250'
-          },
+          }),
           'netRevenue': true,
           'currency': 'USD',
           'ttl': 300
@@ -1126,13 +1155,13 @@ export function getBidResponsesFromAPI() {
           'pbAg': '2.70',
           'size': '300x600',
           'auctionId': 654321,
-          'adserverTargeting': {
+          'adserverTargeting': convertTargetingsFromOldToNew({
             'hb_bidder': 'rubicon',
             'hb_adid': '29019e2ab586a5a',
             'hb_pb': '10.00',
             'hb_size': '300x600',
             'foobar': '300x600'
-          },
+          }),
           'netRevenue': true,
           'currency': 'USD',
           'ttl': 300
@@ -1145,7 +1174,7 @@ export function getBidResponsesFromAPI() {
 // Ad server targeting when `setConfig({ enableSendAllBids: true })` is set.
 export function getAdServerTargeting() {
   return {
-    '/19968336/header-bid-tag-0': {
+    '/19968336/header-bid-tag-0': convertTargetingsFromOldToNew({
       'foobar': '0x0,300x250,300x600',
       'hb_size': '300x250',
       'hb_pb': '10.00',
@@ -1179,8 +1208,8 @@ export function getAdServerTargeting() {
       'hb_pb_rubicon': '10.00',
       'hb_adid_rubicon': '29019e2ab586a5a',
       'hb_bidder_rubicon': 'rubicon'
-    },
-    '/19968336/header-bid-tag1': {
+    }),
+    '/19968336/header-bid-tag1': convertTargetingsFromOldToNew({
       'foobar': '728x90',
       'hb_size': '728x90',
       'hb_pb': '10.00',
@@ -1190,7 +1219,7 @@ export function getAdServerTargeting() {
       'hb_pb_appnexus': '10.00',
       'hb_adid_appnexus': '24bd938435ec3fc',
       'hb_bidder_appnexus': 'appnexus'
-    }
+    })
   };
 }
 
@@ -1198,19 +1227,19 @@ export function getAdServerTargeting() {
 export function getTargetingKeys() {
   return [
     [
-      'hb_bidder',
+      CONSTANTS.TARGETING_KEYS.BIDDER,
       'appnexus'
     ],
     [
-      'hb_adid',
+      CONSTANTS.TARGETING_KEYS.AD_ID,
       '233bcbee889d46d'
     ],
     [
-      'hb_pb',
+      CONSTANTS.TARGETING_KEYS.PRICE_BUCKET,
       '10.00'
     ],
     [
-      'hb_size',
+      CONSTANTS.TARGETING_KEYS.SIZE,
       '300x250'
     ],
     [
@@ -1225,19 +1254,19 @@ export function getTargetingKeys() {
 export function getTargetingKeysBidLandscape() {
   return [
     [
-      'hb_bidder',
+      CONSTANTS.TARGETING_KEYS.BIDDER,
       'appnexus'
     ],
     [
-      'hb_adid_appnexus',
+      CONSTANTS.TARGETING_KEYS.AD_ID + '_appnexus',
       '233bcbee889d46d'
     ],
     [
-      'hb_pb',
+      CONSTANTS.TARGETING_KEYS.PRICE_BUCKET,
       '10.00'
     ],
     [
-      'hb_size',
+      CONSTANTS.TARGETING_KEYS.SIZE,
       '300x250'
     ],
     [
@@ -1245,111 +1274,111 @@ export function getTargetingKeysBidLandscape() {
       ['0x0', '300x250', '300x600']
     ],
     [
-      'hb_bidder_triplelift',
+      CONSTANTS.TARGETING_KEYS.BIDDER + '_triplelift',
       'triplelift'
     ],
     [
-      'hb_adid_triplelift',
+      CONSTANTS.TARGETING_KEYS.AD_ID + '_triplelift',
       '222bb26f9e8bd'
     ],
     [
-      'hb_pb_triplelift',
+      CONSTANTS.TARGETING_KEYS.PRICE_BUCKET + '_triplelift',
       '10.00'
     ],
     [
-      'hb_size_triplelift',
+      CONSTANTS.TARGETING_KEYS.SIZE + '_triplelift',
       '0x0'
     ],
     [
-      'hb_bidder_appnexus',
+      CONSTANTS.TARGETING_KEYS.BIDDER + '_appnexus',
       'appnexus'
     ],
     [
-      'hb_pb_appnexus',
+      CONSTANTS.TARGETING_KEYS.PRICE_BUCKET + '_appnexus',
       '10.00'
     ],
     [
-      'hb_size_appnexus',
+      CONSTANTS.TARGETING_KEYS.SIZE + '_appnexus',
       '300x250'
     ],
     [
-      'hb_bidder_pagescienc',
+      CONSTANTS.TARGETING_KEYS.BIDDER + '_pagescienc',
       'pagescience'
     ],
     [
-      'hb_adid_pagescience',
+      CONSTANTS.TARGETING_KEYS.AD_ID + '_pagescience',
       '25bedd4813632d7'
     ],
     [
-      'hb_pb_pagescience',
+      CONSTANTS.TARGETING_KEYS.PRICE_BUCKET + '_pagescience',
       '10.00'
     ],
     [
-      'hb_size_pagescience',
+      CONSTANTS.TARGETING_KEYS.SIZE + '_pagescience',
       '300x250'
     ],
     [
-      'hb_bidder_brightcom',
+      CONSTANTS.TARGETING_KEYS.BIDDER + '_brightcom',
       'brightcom'
     ],
     [
-      'hb_adid_brightcom',
+      CONSTANTS.TARGETING_KEYS.AD_ID + '_brightcom',
       '26e0795ab963896'
     ],
     [
-      'hb_pb_brightcom',
+      CONSTANTS.TARGETING_KEYS.PRICE_BUCKET + '_brightcom',
       '10.00'
     ],
     [
-      'hb_size_brightcom',
+      CONSTANTS.TARGETING_KEYS.SIZE + '_brightcom',
       '300x250'
     ],
     [
-      'hb_bidder_brealtime',
+      CONSTANTS.TARGETING_KEYS.BIDDER + '_brealtime',
       'brealtime'
     ],
     [
-      'hb_adid_brealtime',
+      CONSTANTS.TARGETING_KEYS.AD_ID + '_brealtime',
       '275bd666f5a5a5d'
     ],
     [
-      'hb_pb_brealtime',
+      CONSTANTS.TARGETING_KEYS.PRICE_BUCKET + '_brealtime',
       '10.00'
     ],
     [
-      'hb_size_brealtime',
+      CONSTANTS.TARGETING_KEYS.SIZE + '_brealtime',
       '300x250'
     ],
     [
-      'hb_bidder_pubmatic',
+      CONSTANTS.TARGETING_KEYS.BIDDER + '_pubmatic',
       'pubmatic'
     ],
     [
-      'hb_adid_pubmatic',
+      CONSTANTS.TARGETING_KEYS.AD_ID + '_pubmatic',
       '28f4039c636b6a7'
     ],
     [
-      'hb_pb_pubmatic',
+      CONSTANTS.TARGETING_KEYS.PRICE_BUCKET + '_pubmatic',
       '10.00'
     ],
     [
-      'hb_size_pubmatic',
+      CONSTANTS.TARGETING_KEYS.SIZE + '_pubmatic',
       '300x250'
     ],
     [
-      'hb_bidder_rubicon',
+      CONSTANTS.TARGETING_KEYS.BIDDER + '_rubicon',
       'rubicon'
     ],
     [
-      'hb_adid_rubicon',
+      CONSTANTS.TARGETING_KEYS.AD_ID + '_rubicon',
       '29019e2ab586a5a'
     ],
     [
-      'hb_pb_rubicon',
+      CONSTANTS.TARGETING_KEYS.PRICE_BUCKET + '_rubicon',
       '10.00'
     ],
     [
-      'hb_size_rubicon',
+      CONSTANTS.TARGETING_KEYS.SIZE + '_rubicon',
       '300x600'
     ]
   ];
@@ -1426,12 +1455,12 @@ export function createBidReceived({bidder, cpm, auctionId, responseTimestamp, ad
     'adUnitCode': adUnitCode,
     'bidder': bidder,
     'size': '300x250',
-    'adserverTargeting': {
+    'adserverTargeting': convertTargetingsFromOldToNew({
       'hb_bidder': bidder,
       'hb_adid': adId,
       'hb_pb': cpm,
       'foobar': '300x250'
-    },
+    }),
     'netRevenue': true,
     'currency': 'USD',
     'ttl': (!ttl) ? 300 : ttl
diff --git a/test/spec/auctionmanager_spec.js b/test/spec/auctionmanager_spec.js
index fa21050e78e..f4c6fc22cb7 100644
--- a/test/spec/auctionmanager_spec.js
+++ b/test/spec/auctionmanager_spec.js
@@ -138,14 +138,13 @@ describe('auctionmanager.js', function () {
 
     /* return the expected response for a given bid, filter by keys if given */
     function getDefaultExpected(bid, keys) {
-      var expected = {
-        'hb_bidder': bid.bidderCode,
-        'hb_adid': bid.adId,
-        'hb_pb': bid.pbMg,
-        'hb_size': bid.getSize(),
-        'hb_source': bid.source,
-        'hb_format': bid.mediaType,
-      };
+      var expected = {};
+      expected[ CONSTANTS.TARGETING_KEYS.BIDDER ] = bid.bidderCode;
+      expected[ CONSTANTS.TARGETING_KEYS.AD_ID ] = bid.adId;
+      expected[ CONSTANTS.TARGETING_KEYS.PRICE_BUCKET ] = bid.pbMg;
+      expected[ CONSTANTS.TARGETING_KEYS.SIZE ] = bid.getSize();
+      expected[ CONSTANTS.TARGETING_KEYS.SOURCE ] = bid.source;
+      expected[ CONSTANTS.TARGETING_KEYS.FORMAT ] = bid.mediaType;
 
       if (!keys) {
         return expected;
@@ -175,35 +174,35 @@ describe('auctionmanager.js', function () {
         standard: {
           adserverTargeting: [
             {
-              key: 'hb_bidder',
+              key: CONSTANTS.TARGETING_KEYS.BIDDER,
               val: function (bidResponse) {
                 return bidResponse.bidderCode;
               }
             }, {
-              key: 'hb_adid',
+              key: CONSTANTS.TARGETING_KEYS.AD_ID,
               val: function (bidResponse) {
                 return bidResponse.adId;
               }
             }, {
-              key: 'hb_pb',
+              key: CONSTANTS.TARGETING_KEYS.PRICE_BUCKET,
               val: function (bidResponse) {
                 // change default here
                 return bidResponse.pbHg;
               }
             }, {
-              key: 'hb_size',
+              key: CONSTANTS.TARGETING_KEYS.SIZE,
               val: function (bidResponse) {
                 return bidResponse.size;
               }
             },
             {
-              key: 'hb_source',
+              key: CONSTANTS.TARGETING_KEYS.SOURCE,
               val: function (bidResponse) {
                 return bidResponse.source;
               }
             },
             {
-              key: 'hb_format',
+              key: CONSTANTS.TARGETING_KEYS.FORMAT,
               val: function (bidResponse) {
                 return bidResponse.mediaType;
               }
@@ -214,7 +213,7 @@ describe('auctionmanager.js', function () {
       };
 
       var expected = getDefaultExpected(bid);
-      expected.hb_pb = bid.pbHg;
+      expected[CONSTANTS.TARGETING_KEYS.PRICE_BUCKET] = bid.pbHg;
 
       var response = getKeyValueTargetingPairs(bid.bidderCode, bid);
       assert.deepEqual(response, expected);
@@ -226,23 +225,23 @@ describe('auctionmanager.js', function () {
         appnexus: {
           adserverTargeting: [
             {
-              key: 'hb_bidder',
+              key: CONSTANTS.TARGETING_KEYS.BIDDER,
               val: function (bidResponse) {
                 return bidResponse.bidderCode;
               }
             }, {
-              key: 'hb_adid',
+              key: CONSTANTS.TARGETING_KEYS.AD_ID,
               val: function (bidResponse) {
                 return bidResponse.adId;
               }
             }, {
-              key: 'hb_pb',
+              key: CONSTANTS.TARGETING_KEYS.PRICE_BUCKET,
               val: function (bidResponse) {
                 // change default here
                 return bidResponse.pbHg;
               }
             }, {
-              key: 'hb_size',
+              key: CONSTANTS.TARGETING_KEYS.SIZE,
               val: function (bidResponse) {
                 return bidResponse.size;
               }
@@ -253,7 +252,7 @@ describe('auctionmanager.js', function () {
       };
 
       var expected = getDefaultExpected(bid);
-      expected.hb_pb = bid.pbHg;
+      expected[CONSTANTS.TARGETING_KEYS.PRICE_BUCKET] = bid.pbHg;
 
       var response = getKeyValueTargetingPairs(bid.bidderCode, bid);
       assert.deepEqual(response, expected);
@@ -265,23 +264,23 @@ describe('auctionmanager.js', function () {
         nonExistentBidder: {
           adserverTargeting: [
             {
-              key: 'hb_bidder',
+              key: CONSTANTS.TARGETING_KEYS.BIDDER,
               val: function (bidResponse) {
                 return bidResponse.bidderCode;
               }
             }, {
-              key: 'hb_adid',
+              key: CONSTANTS.TARGETING_KEYS.AD_ID,
               val: function (bidResponse) {
                 return bidResponse.adId;
               }
             }, {
-              key: 'hb_pb',
+              key: CONSTANTS.TARGETING_KEYS.PRICE_BUCKET,
               val: function (bidResponse) {
                 // change default here
                 return bidResponse.pbHg;
               }
             }, {
-              key: 'hb_size',
+              key: CONSTANTS.TARGETING_KEYS.SIZE,
               val: function (bidResponse) {
                 return bidResponse.size;
               }
@@ -310,17 +309,17 @@ describe('auctionmanager.js', function () {
           },
           adserverTargeting: [
             {
-              key: 'hb_bidder',
+              key: CONSTANTS.TARGETING_KEYS.BIDDER,
               val: function (bidResponse) {
                 return bidResponse.bidderCode;
               }
             }, {
-              key: 'hb_adid',
+              key: CONSTANTS.TARGETING_KEYS.AD_ID,
               val: function (bidResponse) {
                 return bidResponse.adId;
               }
             }, {
-              key: 'hb_pb',
+              key: CONSTANTS.TARGETING_KEYS.PRICE_BUCKET,
               val: function (bidResponse) {
                 // change default here
                 return 10.00;
@@ -330,8 +329,8 @@ describe('auctionmanager.js', function () {
 
         }
       };
-      var expected = getDefaultExpected(bid, ['hb_bidder', 'hb_adid']);
-      expected.hb_pb = 10.0;
+      var expected = getDefaultExpected(bid, [CONSTANTS.TARGETING_KEYS.BIDDER, CONSTANTS.TARGETING_KEYS.AD_ID]);
+      expected[CONSTANTS.TARGETING_KEYS.PRICE_BUCKET] = 10.0;
 
       var response = getKeyValueTargetingPairs(bid.bidderCode, bid);
       assert.deepEqual(response, expected);
@@ -367,17 +366,17 @@ describe('auctionmanager.js', function () {
           },
           adserverTargeting: [
             {
-              key: 'hb_bidder',
+              key: CONSTANTS.TARGETING_KEYS.BIDDER,
               val: function (bidResponse) {
                 return bidResponse.bidderCode;
               }
             }, {
-              key: 'hb_adid',
+              key: CONSTANTS.TARGETING_KEYS.AD_ID,
               val: function (bidResponse) {
                 return bidResponse.adId;
               }
             }, {
-              key: 'hb_pb',
+              key: CONSTANTS.TARGETING_KEYS.PRICE_BUCKET,
               val: function (bidResponse) {
                 // change default here
                 return 15.00;
@@ -388,24 +387,24 @@ describe('auctionmanager.js', function () {
         standard: {
           adserverTargeting: [
             {
-              key: 'hb_bidder',
+              key: CONSTANTS.TARGETING_KEYS.BIDDER,
               val: function (bidResponse) {
                 return bidResponse.bidderCode;
               }
             }, {
-              key: 'hb_adid',
+              key: CONSTANTS.TARGETING_KEYS.AD_ID,
               val: function (bidResponse) {
                 return bidResponse.adId;
               }
             }, {
-              key: 'hb_pb',
+              key: CONSTANTS.TARGETING_KEYS.PRICE_BUCKET,
               val: function (bidResponse) {
                 // change default here
                 return 10.00;
               },
             },
             {
-              key: 'hb_size',
+              key: CONSTANTS.TARGETING_KEYS.SIZE,
               val: function (bidResponse) {
                 return bidResponse.size;
               }
@@ -414,8 +413,8 @@ describe('auctionmanager.js', function () {
 
         }
       };
-      var expected = getDefaultExpected(bid, ['hb_bidder', 'hb_adid', 'hb_size']);
-      expected.hb_pb = 15.0;
+      var expected = getDefaultExpected(bid, [CONSTANTS.TARGETING_KEYS.BIDDER, CONSTANTS.TARGETING_KEYS.AD_ID, CONSTANTS.TARGETING_KEYS.SIZE]);
+      expected[CONSTANTS.TARGETING_KEYS.PRICE_BUCKET] = 15.0;
 
       var response = getKeyValueTargetingPairs(bid.bidderCode, bid);
       assert.deepEqual(response, expected);
@@ -428,17 +427,17 @@ describe('auctionmanager.js', function () {
           sendStandardTargeting: false,
           adserverTargeting: [
             {
-              key: 'hb_bidder',
+              key: CONSTANTS.TARGETING_KEYS.BIDDER,
               val: function (bidResponse) {
                 return bidResponse.bidderCode;
               }
             }, {
-              key: 'hb_adid',
+              key: CONSTANTS.TARGETING_KEYS.AD_ID,
               val: function (bidResponse) {
                 return bidResponse.adId;
               }
             }, {
-              key: 'hb_pb',
+              key: CONSTANTS.TARGETING_KEYS.PRICE_BUCKET,
               val: function (bidResponse) {
                 return bidResponse.pbHg;
               }
@@ -447,7 +446,7 @@ describe('auctionmanager.js', function () {
         }
       };
       var expected = getDefaultExpected(bid);
-      expected.hb_pb = 5.57;
+      expected[CONSTANTS.TARGETING_KEYS.PRICE_BUCKET] = 5.57;
 
       var response = getKeyValueTargetingPairs(bid.bidderCode, bid);
       assert.deepEqual(response, expected);
@@ -608,7 +607,7 @@ describe('auctionmanager.js', function () {
         auction.callBids();
 
         let registeredBid = auction.getBidsReceived().pop();
-        assert.equal(registeredBid.adserverTargeting[`hb_deal`], 'test deal', 'dealId placed in adserverTargeting');
+        assert.equal(registeredBid.adserverTargeting[CONSTANTS.TARGETING_KEYS.DEAL], 'test deal', 'dealId placed in adserverTargeting');
       });
 
       it('should pass through default adserverTargeting sent from adapter', function () {
@@ -617,7 +616,7 @@ describe('auctionmanager.js', function () {
         auction.callBids();
 
         let registeredBid = auction.getBidsReceived().pop();
-        assert.equal(registeredBid.adserverTargeting.hb_bidder, BIDDER_CODE);
+        assert.equal(registeredBid.adserverTargeting[CONSTANTS.TARGETING_KEYS.BIDDER], BIDDER_CODE);
         assert.equal(registeredBid.adserverTargeting.extra, 'stuff');
       });
 
diff --git a/test/spec/native_spec.js b/test/spec/native_spec.js
index dc70592877e..91b96cac281 100644
--- a/test/spec/native_spec.js
+++ b/test/spec/native_spec.js
@@ -1,5 +1,6 @@
 import { expect } from 'chai';
 import { fireNativeTrackers, getNativeTargeting, nativeBidIsValid } from 'src/native';
+import CONSTANTS from 'src/constants.json';
 const utils = require('src/utils');
 
 const bid = {
@@ -31,9 +32,9 @@ describe('native.js', function () {
 
   it('gets native targeting keys', function () {
     const targeting = getNativeTargeting(bid);
-    expect(targeting.hb_native_title).to.equal(bid.native.title);
-    expect(targeting.hb_native_body).to.equal(bid.native.body);
-    expect(targeting.hb_native_linkurl).to.equal(bid.native.clickUrl);
+    expect(targeting[CONSTANTS.NATIVE_KEYS.title]).to.equal(bid.native.title);
+    expect(targeting[CONSTANTS.NATIVE_KEYS.body]).to.equal(bid.native.body);
+    expect(targeting[CONSTANTS.NATIVE_KEYS.clickUrl]).to.equal(bid.native.clickUrl);
   });
 
   it('fires impression trackers', function () {
diff --git a/test/spec/unit/core/targeting_spec.js b/test/spec/unit/core/targeting_spec.js
index a72992e099d..9910645be09 100644
--- a/test/spec/unit/core/targeting_spec.js
+++ b/test/spec/unit/core/targeting_spec.js
@@ -27,11 +27,11 @@ const bid1 = {
   'bidder': 'rubicon',
   'size': '300x250',
   'adserverTargeting': {
-    'hb_bidder': 'rubicon',
-    'hb_adid': '148018fe5e',
-    'hb_pb': '0.53',
-    'hb_deal': '1234',
-    'foobar': '300x250'
+    'foobar': '300x250',
+    [CONSTANTS.TARGETING_KEYS.BIDDER]: 'rubicon',
+    [CONSTANTS.TARGETING_KEYS.AD_ID]: '148018fe5e',
+    [CONSTANTS.TARGETING_KEYS.PRICE_BUCKET]: '0.53',
+    [CONSTANTS.TARGETING_KEYS.DEAL]: '1234'
   },
   'netRevenue': true,
   'currency': 'USD',
@@ -58,10 +58,10 @@ const bid2 = {
   'bidder': 'rubicon',
   'size': '300x250',
   'adserverTargeting': {
-    'hb_bidder': 'rubicon',
-    'hb_adid': '5454545',
-    'hb_pb': '0.25',
-    'foobar': '300x250'
+    'foobar': '300x250',
+    [CONSTANTS.TARGETING_KEYS.BIDDER]: 'rubicon',
+    [CONSTANTS.TARGETING_KEYS.AD_ID]: '5454545',
+    [CONSTANTS.TARGETING_KEYS.PRICE_BUCKET]: '0.25'
   },
   'netRevenue': true,
   'currency': 'USD',
@@ -88,10 +88,10 @@ const bid3 = {
   'bidder': 'rubicon',
   'size': '300x600',
   'adserverTargeting': {
-    'hb_bidder': 'rubicon',
-    'hb_adid': '48747745',
-    'hb_pb': '0.75',
-    'foobar': '300x600'
+    'foobar': '300x600',
+    [CONSTANTS.TARGETING_KEYS.BIDDER]: 'rubicon',
+    [CONSTANTS.TARGETING_KEYS.AD_ID]: '48747745',
+    [CONSTANTS.TARGETING_KEYS.PRICE_BUCKET]: '0.75'
   },
   'netRevenue': true,
   'currency': 'USD',
@@ -140,12 +140,12 @@ describe('targeting tests', function () {
       // we should only get the targeting data for the one requested adunit
       expect(Object.keys(targeting).length).to.equal(1);
 
-      let sendAllBidCpm = Object.keys(targeting['/123456/header-bid-tag-0']).filter(key => key.indexOf('hb_pb_') != -1);
+      let sendAllBidCpm = Object.keys(targeting['/123456/header-bid-tag-0']).filter(key => key.indexOf(CONSTANTS.TARGETING_KEYS.PRICE_BUCKET + '_') != -1)
       // we shouldn't get more than 1 key for hb_pb_${bidder}
       expect(sendAllBidCpm.length).to.equal(1);
 
       // expect the winning CPM to be equal to the sendAllBidCPM
-      expect(targeting['/123456/header-bid-tag-0']['hb_pb_rubicon']).to.deep.equal(targeting['/123456/header-bid-tag-0']['hb_pb']);
+      expect(targeting['/123456/header-bid-tag-0'][CONSTANTS.TARGETING_KEYS.PRICE_BUCKET + '_rubicon']).to.deep.equal(targeting['/123456/header-bid-tag-0'][CONSTANTS.TARGETING_KEYS.PRICE_BUCKET]);
     });
   }); // end getAllTargeting tests
 
diff --git a/test/spec/unit/pbjs_api_spec.js b/test/spec/unit/pbjs_api_spec.js
index 41e40100011..96f02e7f8f2 100644
--- a/test/spec/unit/pbjs_api_spec.js
+++ b/test/spec/unit/pbjs_api_spec.js
@@ -166,7 +166,7 @@ describe('Unit: Prebid Module', function () {
     it('should return targeting info as a string', function () {
       const adUnitCode = config.adUnitCodes[0];
       $$PREBID_GLOBAL$$.setConfig({ enableSendAllBids: true });
-      var expected = 'foobar=0x0%2C300x250%2C300x600&hb_size=300x250&hb_pb=10.00&hb_adid=233bcbee889d46d&hb_bidder=appnexus&hb_size_triplelift=0x0&hb_pb_triplelift=10.00&hb_adid_triplelift=222bb26f9e8bd&hb_bidder_triplelift=triplelift&hb_size_appnexus=300x250&hb_pb_appnexus=10.00&hb_adid_appnexus=233bcbee889d46d&hb_bidder_appnexus=appnexus&hb_size_pagescience=300x250&hb_pb_pagescience=10.00&hb_adid_pagescience=25bedd4813632d7&hb_bidder_pagescienc=pagescience&hb_size_brightcom=300x250&hb_pb_brightcom=10.00&hb_adid_brightcom=26e0795ab963896&hb_bidder_brightcom=brightcom&hb_size_brealtime=300x250&hb_pb_brealtime=10.00&hb_adid_brealtime=275bd666f5a5a5d&hb_bidder_brealtime=brealtime&hb_size_pubmatic=300x250&hb_pb_pubmatic=10.00&hb_adid_pubmatic=28f4039c636b6a7&hb_bidder_pubmatic=pubmatic&hb_size_rubicon=300x600&hb_pb_rubicon=10.00&hb_adid_rubicon=29019e2ab586a5a&hb_bidder_rubicon=rubicon';
+      var expected = 'foobar=0x0%2C300x250%2C300x600&' + CONSTANTS.TARGETING_KEYS.SIZE + '=300x250&' + CONSTANTS.TARGETING_KEYS.PRICE_BUCKET + '=10.00&' + CONSTANTS.TARGETING_KEYS.AD_ID + '=233bcbee889d46d&' + CONSTANTS.TARGETING_KEYS.BIDDER + '=appnexus&' + CONSTANTS.TARGETING_KEYS.SIZE + '_triplelift=0x0&' + CONSTANTS.TARGETING_KEYS.PRICE_BUCKET + '_triplelift=10.00&' + CONSTANTS.TARGETING_KEYS.AD_ID + '_triplelift=222bb26f9e8bd&' + CONSTANTS.TARGETING_KEYS.BIDDER + '_triplelift=triplelift&' + CONSTANTS.TARGETING_KEYS.SIZE + '_appnexus=300x250&' + CONSTANTS.TARGETING_KEYS.PRICE_BUCKET + '_appnexus=10.00&' + CONSTANTS.TARGETING_KEYS.AD_ID + '_appnexus=233bcbee889d46d&' + CONSTANTS.TARGETING_KEYS.BIDDER + '_appnexus=appnexus&' + CONSTANTS.TARGETING_KEYS.SIZE + '_pagescience=300x250&' + CONSTANTS.TARGETING_KEYS.PRICE_BUCKET + '_pagescience=10.00&' + CONSTANTS.TARGETING_KEYS.AD_ID + '_pagescience=25bedd4813632d7&' + CONSTANTS.TARGETING_KEYS.BIDDER + '_pagescienc=pagescience&' + CONSTANTS.TARGETING_KEYS.SIZE + '_brightcom=300x250&' + CONSTANTS.TARGETING_KEYS.PRICE_BUCKET + '_brightcom=10.00&' + CONSTANTS.TARGETING_KEYS.AD_ID + '_brightcom=26e0795ab963896&' + CONSTANTS.TARGETING_KEYS.BIDDER + '_brightcom=brightcom&' + CONSTANTS.TARGETING_KEYS.SIZE + '_brealtime=300x250&' + CONSTANTS.TARGETING_KEYS.PRICE_BUCKET + '_brealtime=10.00&' + CONSTANTS.TARGETING_KEYS.AD_ID + '_brealtime=275bd666f5a5a5d&' + CONSTANTS.TARGETING_KEYS.BIDDER + '_brealtime=brealtime&' + CONSTANTS.TARGETING_KEYS.SIZE + '_pubmatic=300x250&' + CONSTANTS.TARGETING_KEYS.PRICE_BUCKET + '_pubmatic=10.00&' + CONSTANTS.TARGETING_KEYS.AD_ID + '_pubmatic=28f4039c636b6a7&' + CONSTANTS.TARGETING_KEYS.BIDDER + '_pubmatic=pubmatic&' + CONSTANTS.TARGETING_KEYS.SIZE + '_rubicon=300x600&' + CONSTANTS.TARGETING_KEYS.PRICE_BUCKET + '_rubicon=10.00&' + CONSTANTS.TARGETING_KEYS.AD_ID + '_rubicon=29019e2ab586a5a&' + CONSTANTS.TARGETING_KEYS.BIDDER + '_rubicon=rubicon';
       var result = $$PREBID_GLOBAL$$.getAdserverTargetingForAdUnitCodeStr(adUnitCode);
       assert.equal(expected, result, 'returns expected string of ad targeting info');
     });
@@ -212,17 +212,17 @@ describe('Unit: Prebid Module', function () {
       var expected = {
         '/19968336/header-bid-tag-0': {
           foobar: '0x0,300x250,300x600',
-          hb_size: '300x250',
-          hb_pb: '10.00',
-          hb_adid: '233bcbee889d46d',
-          hb_bidder: 'appnexus'
+          [CONSTANTS.TARGETING_KEYS.SIZE]: '300x250',
+          [CONSTANTS.TARGETING_KEYS.PRICE_BUCKET]: '10.00',
+          [CONSTANTS.TARGETING_KEYS.AD_ID]: '233bcbee889d46d',
+          [CONSTANTS.TARGETING_KEYS.BIDDER]: 'appnexus'
         },
         '/19968336/header-bid-tag1': {
           foobar: '728x90',
-          hb_size: '728x90',
-          hb_pb: '10.00',
-          hb_adid: '24bd938435ec3fc',
-          hb_bidder: 'appnexus'
+          [CONSTANTS.TARGETING_KEYS.SIZE]: '728x90',
+          [CONSTANTS.TARGETING_KEYS.PRICE_BUCKET]: '10.00',
+          [CONSTANTS.TARGETING_KEYS.AD_ID]: '24bd938435ec3fc',
+          [CONSTANTS.TARGETING_KEYS.BIDDER]: 'appnexus'
         }
       };
       assert.deepEqual(targeting, expected);
@@ -259,18 +259,18 @@ describe('Unit: Prebid Module', function () {
       var expected = {
         '/19968336/header-bid-tag-0': {
           foobar: '300x250,300x600',
-          hb_size: '300x250',
-          hb_pb: '10.00',
-          hb_adid: '233bcbee889d46d',
-          hb_bidder: 'appnexus',
-          always_use_me: 'abc'
+          always_use_me: 'abc',
+          [CONSTANTS.TARGETING_KEYS.SIZE]: '300x250',
+          [CONSTANTS.TARGETING_KEYS.PRICE_BUCKET]: '10.00',
+          [CONSTANTS.TARGETING_KEYS.AD_ID]: '233bcbee889d46d',
+          [CONSTANTS.TARGETING_KEYS.BIDDER]: 'appnexus'
         },
         '/19968336/header-bid-tag1': {
           foobar: '728x90',
-          hb_size: '728x90',
-          hb_pb: '10.00',
-          hb_adid: '24bd938435ec3fc',
-          hb_bidder: 'appnexus'
+          [CONSTANTS.TARGETING_KEYS.SIZE]: '728x90',
+          [CONSTANTS.TARGETING_KEYS.PRICE_BUCKET]: '10.00',
+          [CONSTANTS.TARGETING_KEYS.AD_ID]: '24bd938435ec3fc',
+          [CONSTANTS.TARGETING_KEYS.BIDDER]: 'appnexus'
         }
       };
       assert.deepEqual(targeting, expected);
@@ -289,7 +289,7 @@ describe('Unit: Prebid Module', function () {
       $$PREBID_GLOBAL$$.bidderSettings = {
         'standard': {
           adserverTargeting: [{
-            key: 'hb_bidder',
+            key: CONSTANTS.TARGETING_KEYS.BIDDER,
             val: function(bidResponse) {
               return bidResponse.bidderCode;
             }
@@ -299,7 +299,7 @@ describe('Unit: Prebid Module', function () {
               return bidResponse.adId;
             }
           }, {
-            key: 'hb_pb',
+            key: CONSTANTS.TARGETING_KEYS.PRICE_BUCKET,
             val: function(bidResponse) {
               return bidResponse.pbMg;
             }
@@ -317,22 +317,21 @@ describe('Unit: Prebid Module', function () {
       var expected = {
         '/19968336/header-bid-tag-0': {
           foobar: '300x250',
-          hb_size: '300x250',
-          hb_pb: '10.00',
-          hb_adid: '233bcbee889d46d',
-          hb_bidder: 'appnexus',
-          custom_ad_id: '233bcbee889d46d'
+          custom_ad_id: '233bcbee889d46d',
+          [CONSTANTS.TARGETING_KEYS.SIZE]: '300x250',
+          [CONSTANTS.TARGETING_KEYS.PRICE_BUCKET]: '10.00',
+          [CONSTANTS.TARGETING_KEYS.AD_ID]: '233bcbee889d46d',
+          [CONSTANTS.TARGETING_KEYS.BIDDER]: 'appnexus'
         },
         '/19968336/header-bid-tag1': {
           foobar: '728x90',
-          hb_size: '728x90',
-          hb_pb: '10.00',
-          hb_adid: '24bd938435ec3fc',
-          hb_bidder: 'appnexus',
+          [CONSTANTS.TARGETING_KEYS.SIZE]: '728x90',
+          [CONSTANTS.TARGETING_KEYS.PRICE_BUCKET]: '10.00',
+          [CONSTANTS.TARGETING_KEYS.AD_ID]: '24bd938435ec3fc',
+          [CONSTANTS.TARGETING_KEYS.BIDDER]: 'appnexus',
           custom_ad_id: '24bd938435ec3fc'
         }
       };
-
       assert.deepEqual(targeting, expected);
       $$PREBID_GLOBAL$$.bidderSettings = {};
     });
@@ -480,32 +479,32 @@ describe('Unit: Prebid Module', function () {
       ajaxStub.restore();
     });
 
-    it('should get correct hb_pb when using bid.cpm is between 0 to 5', function () {
+    it('should get correct ' + CONSTANTS.TARGETING_KEYS.PRICE_BUCKET + ' when using bid.cpm is between 0 to 5', function() {
       RESPONSE.tags[0].ads[0].cpm = 2.1234;
       auction.callBids(cbTimeout);
       let bidTargeting = targeting.getAllTargeting();
-      expect(bidTargeting['div-gpt-ad-1460505748561-0']['hb_pb']).to.equal('2.12');
+      expect(bidTargeting['div-gpt-ad-1460505748561-0'][CONSTANTS.TARGETING_KEYS.PRICE_BUCKET]).to.equal('2.12');
     });
 
-    it('should get correct hb_pb when using bid.cpm is between 5 to 8', function () {
+    it('should get correct ' + CONSTANTS.TARGETING_KEYS.PRICE_BUCKET + ' when using bid.cpm is between 5 to 8', function() {
       RESPONSE.tags[0].ads[0].cpm = 6.78;
       auction.callBids(cbTimeout);
       let bidTargeting = targeting.getAllTargeting();
-      expect(bidTargeting['div-gpt-ad-1460505748561-0']['hb_pb']).to.equal('6.75');
+      expect(bidTargeting['div-gpt-ad-1460505748561-0'][CONSTANTS.TARGETING_KEYS.PRICE_BUCKET]).to.equal('6.75');
     });
 
-    it('should get correct hb_pb when using bid.cpm is between 8 to 20', function () {
+    it('should get correct ' + CONSTANTS.TARGETING_KEYS.PRICE_BUCKET + ' when using bid.cpm is between 8 to 20', function() {
       RESPONSE.tags[0].ads[0].cpm = 19.5234;
       auction.callBids(cbTimeout);
       let bidTargeting = targeting.getAllTargeting();
-      expect(bidTargeting['div-gpt-ad-1460505748561-0']['hb_pb']).to.equal('19.50');
+      expect(bidTargeting['div-gpt-ad-1460505748561-0'][CONSTANTS.TARGETING_KEYS.PRICE_BUCKET]).to.equal('19.50');
     });
 
-    it('should get correct hb_pb when using bid.cpm is between 20 to 25', function () {
+    it('should get correct ' + CONSTANTS.TARGETING_KEYS.PRICE_BUCKET + ' when using bid.cpm is between 20 to 25', function() {
       RESPONSE.tags[0].ads[0].cpm = 21.5234;
       auction.callBids(cbTimeout);
       let bidTargeting = targeting.getAllTargeting();
-      expect(bidTargeting['div-gpt-ad-1460505748561-0']['hb_pb']).to.equal('21.00');
+      expect(bidTargeting['div-gpt-ad-1460505748561-0'][CONSTANTS.TARGETING_KEYS.PRICE_BUCKET]).to.equal('21.00');
     });
   });
 
@@ -720,7 +719,7 @@ describe('Unit: Prebid Module', function () {
       ajaxStub.restore();
     });
 
-    it('should get correct hb_pb with cpm between 0 - 5', function () {
+    it('should get correct ' + CONSTANTS.TARGETING_KEYS.PRICE_BUCKET + ' with cpm between 0 - 5', function() {
       initTestConfig({
         adUnits: [createAdUnit('div-gpt-ad-1460505748561-0')],
         adUnitCodes: ['div-gpt-ad-1460505748561-0']
@@ -731,10 +730,10 @@ describe('Unit: Prebid Module', function () {
 
       auction.callBids(cbTimeout);
       let bidTargeting = targeting.getAllTargeting();
-      expect(bidTargeting['div-gpt-ad-1460505748561-0']['hb_pb']).to.equal('3.25');
+      expect(bidTargeting['div-gpt-ad-1460505748561-0'][CONSTANTS.TARGETING_KEYS.PRICE_BUCKET]).to.equal('3.25');
     });
 
-    it('should get correct hb_pb with cpm between 21 - 100', function () {
+    it('should get correct ' + CONSTANTS.TARGETING_KEYS.PRICE_BUCKET + ' with cpm between 21 - 100', function() {
       initTestConfig({
         adUnits: [createAdUnit('div-gpt-ad-1460505748561-0')],
         adUnitCodes: ['div-gpt-ad-1460505748561-0']
@@ -745,7 +744,7 @@ describe('Unit: Prebid Module', function () {
 
       auction.callBids(cbTimeout);
       let bidTargeting = targeting.getAllTargeting();
-      expect(bidTargeting['div-gpt-ad-1460505748561-0']['hb_pb']).to.equal('43.00');
+      expect(bidTargeting['div-gpt-ad-1460505748561-0'][CONSTANTS.TARGETING_KEYS.PRICE_BUCKET]).to.equal('43.00');
     });
 
     it('should only apply price granularity if bid media type matches', function () {
@@ -759,7 +758,7 @@ describe('Unit: Prebid Module', function () {
 
       auction.callBids(cbTimeout);
       let bidTargeting = targeting.getAllTargeting();
-      expect(bidTargeting['div-gpt-ad-1460505748561-0']['hb_pb']).to.equal('3.00');
+      expect(bidTargeting['div-gpt-ad-1460505748561-0'][CONSTANTS.TARGETING_KEYS.PRICE_BUCKET]).to.equal('3.00');
     });
   });
 
@@ -821,7 +820,7 @@ describe('Unit: Prebid Module', function () {
       $$PREBID_GLOBAL$$.setConfig({ enableSendAllBids: true });
 
       $$PREBID_GLOBAL$$.setTargetingForGPTAsync('/19968336/header-bid-tag-0');
-      expect(slots[0].spySetTargeting.args).to.deep.contain.members([['hb_bidder', 'appnexus'], ['hb_adid_appnexus', '233bcbee889d46d'], ['hb_pb_appnexus', '10.00']]);
+      expect(slots[0].spySetTargeting.args).to.deep.contain.members([[CONSTANTS.TARGETING_KEYS.BIDDER, 'appnexus'], [CONSTANTS.TARGETING_KEYS.AD_ID + '_appnexus', '233bcbee889d46d'], [CONSTANTS.TARGETING_KEYS.PRICE_BUCKET + '_appnexus', '10.00']]);
     });
 
     it('should set targeting when passed an array of ad unit codes with enableSendAllBids', function () {
@@ -830,7 +829,7 @@ describe('Unit: Prebid Module', function () {
       $$PREBID_GLOBAL$$.setConfig({ enableSendAllBids: true });
 
       $$PREBID_GLOBAL$$.setTargetingForGPTAsync(['/19968336/header-bid-tag-0']);
-      expect(slots[0].spySetTargeting.args).to.deep.contain.members([['hb_bidder', 'appnexus'], ['hb_adid_appnexus', '233bcbee889d46d'], ['hb_pb_appnexus', '10.00']]);
+      expect(slots[0].spySetTargeting.args).to.deep.contain.members([[CONSTANTS.TARGETING_KEYS.BIDDER, 'appnexus'], [CONSTANTS.TARGETING_KEYS.AD_ID + '_appnexus', '233bcbee889d46d'], [CONSTANTS.TARGETING_KEYS.PRICE_BUCKET + '_appnexus', '10.00']]);
     });
 
     it('should set targeting from googletag data', function () {
@@ -877,19 +876,19 @@ describe('Unit: Prebid Module', function () {
 
       var expected = [
         [
-          'hb_bidder',
+          CONSTANTS.TARGETING_KEYS.BIDDER,
           'appnexus'
         ],
         [
-          'hb_adid',
+          CONSTANTS.TARGETING_KEYS.AD_ID,
           '233bcbee889d46d'
         ],
         [
-          'hb_pb',
+          CONSTANTS.TARGETING_KEYS.PRICE_BUCKET,
           '10.00'
         ],
         [
-          'hb_size',
+          CONSTANTS.TARGETING_KEYS.SIZE,
           '300x250'
         ],
         [
@@ -1527,16 +1526,16 @@ describe('Unit: Prebid Module', function () {
         let expected = {
           '/19968336/header-bid-tag-0': {
             'foobar': '0x0,300x250,300x600',
-            'hb_size': '300x250',
-            'hb_pb': '10.00',
-            'hb_adid': '233bcbee889d46d',
-            'hb_bidder': 'appnexus'
+            [CONSTANTS.TARGETING_KEYS.SIZE]: '300x250',
+            [CONSTANTS.TARGETING_KEYS.PRICE_BUCKET]: '10.00',
+            [CONSTANTS.TARGETING_KEYS.AD_ID]: '233bcbee889d46d',
+            [CONSTANTS.TARGETING_KEYS.BIDDER]: 'appnexus'
           },
           '/19968336/header-bid-tag1': {
-            'hb_bidder': 'appnexus',
-            'hb_adid': '24bd938435ec3fc',
-            'hb_pb': '10.00',
-            'hb_size': '728x90',
+            [CONSTANTS.TARGETING_KEYS.BIDDER]: 'appnexus',
+            [CONSTANTS.TARGETING_KEYS.AD_ID]: '24bd938435ec3fc',
+            [CONSTANTS.TARGETING_KEYS.PRICE_BUCKET]: '10.00',
+            [CONSTANTS.TARGETING_KEYS.SIZE]: '728x90',
             'foobar': '728x90'
           }
         }
@@ -1793,12 +1792,12 @@ describe('Unit: Prebid Module', function () {
           'alwaysUseBid': true,
           'auctionId': 123456,
           'adserverTargeting': {
-            'hb_bidder': 'appnexus',
-            'hb_adid': '233bcbee889d46d',
-            'hb_pb': '10.00',
-            'hb_size': '300x250',
             'foobar': '300x250',
-            'hb_deal_appnexusDummyName': '1234'
+            [CONSTANTS.TARGETING_KEYS.BIDDER]: 'appnexus',
+            [CONSTANTS.TARGETING_KEYS.AD_ID]: '233bcbee889d46d',
+            [CONSTANTS.TARGETING_KEYS.PRICE_BUCKET]: '10.00',
+            [CONSTANTS.TARGETING_KEYS.SIZE]: '300x250',
+            [CONSTANTS.TARGETING_KEYS.DEAL + '_appnexusDummyName']: '1234'
           }
         }
       ];
@@ -1952,11 +1951,11 @@ describe('Unit: Prebid Module', function () {
       expect(newAdserverTargeting).to.deep.equal(window.apntag.tags[adUnitCode].keywords);
     });
 
-    it('should not find hb_adid key in lowercase for all bidders', function () {
+    it('should not find ' + CONSTANTS.TARGETING_KEYS.AD_ID + ' key in lowercase for all bidders', function() {
       const adUnitCode = '/19968336/header-bid-tag-0';
       $$PREBID_GLOBAL$$.setConfig({ enableSendAllBids: true });
       targeting.setTargetingForAst();
-      const keywords = Object.keys(window.apntag.tags[adUnitCode].keywords).filter(keyword => (keyword.substring(0, 'hb_adid'.length) === 'hb_adid'));
+      const keywords = Object.keys(window.apntag.tags[adUnitCode].keywords).filter(keyword => (keyword.substring(0, CONSTANTS.TARGETING_KEYS.AD_ID.length) === CONSTANTS.TARGETING_KEYS.AD_ID));
       expect(keywords.length).to.equal(0);
     });
   });
diff --git a/test/spec/utils_spec.js b/test/spec/utils_spec.js
index 7891eff5f33..952c6791056 100755
--- a/test/spec/utils_spec.js
+++ b/test/spec/utils_spec.js
@@ -1,5 +1,6 @@
 import { getAdServerTargeting } from 'test/fixtures/fixtures';
 import { expect } from 'chai';
+import CONSTANTS from 'src/constants.json';
 
 var assert = require('assert');
 var utils = require('src/utils');
@@ -101,7 +102,7 @@ describe('Utils', function () {
       var obj = getAdServerTargeting();
 
       var output = utils.transformAdServerTargetingObj(obj[Object.keys(obj)[0]]);
-      var expected = 'foobar=0x0%2C300x250%2C300x600&hb_size=300x250&hb_pb=10.00&hb_adid=233bcbee889d46d&hb_bidder=appnexus&hb_size_triplelift=0x0&hb_pb_triplelift=10.00&hb_adid_triplelift=222bb26f9e8bd&hb_bidder_triplelift=triplelift&hb_size_appnexus=300x250&hb_pb_appnexus=10.00&hb_adid_appnexus=233bcbee889d46d&hb_bidder_appnexus=appnexus&hb_size_pagescience=300x250&hb_pb_pagescience=10.00&hb_adid_pagescience=25bedd4813632d7&hb_bidder_pagescienc=pagescience&hb_size_brightcom=300x250&hb_pb_brightcom=10.00&hb_adid_brightcom=26e0795ab963896&hb_bidder_brightcom=brightcom&hb_size_brealtime=300x250&hb_pb_brealtime=10.00&hb_adid_brealtime=275bd666f5a5a5d&hb_bidder_brealtime=brealtime&hb_size_pubmatic=300x250&hb_pb_pubmatic=10.00&hb_adid_pubmatic=28f4039c636b6a7&hb_bidder_pubmatic=pubmatic&hb_size_rubicon=300x600&hb_pb_rubicon=10.00&hb_adid_rubicon=29019e2ab586a5a&hb_bidder_rubicon=rubicon';
+      var expected = 'foobar=0x0%2C300x250%2C300x600&' + CONSTANTS.TARGETING_KEYS.SIZE + '=300x250&' + CONSTANTS.TARGETING_KEYS.PRICE_BUCKET + '=10.00&' + CONSTANTS.TARGETING_KEYS.AD_ID + '=233bcbee889d46d&' + CONSTANTS.TARGETING_KEYS.BIDDER + '=appnexus&' + CONSTANTS.TARGETING_KEYS.SIZE + '_triplelift=0x0&' + CONSTANTS.TARGETING_KEYS.PRICE_BUCKET + '_triplelift=10.00&' + CONSTANTS.TARGETING_KEYS.AD_ID + '_triplelift=222bb26f9e8bd&' + CONSTANTS.TARGETING_KEYS.BIDDER + '_triplelift=triplelift&' + CONSTANTS.TARGETING_KEYS.SIZE + '_appnexus=300x250&' + CONSTANTS.TARGETING_KEYS.PRICE_BUCKET + '_appnexus=10.00&' + CONSTANTS.TARGETING_KEYS.AD_ID + '_appnexus=233bcbee889d46d&' + CONSTANTS.TARGETING_KEYS.BIDDER + '_appnexus=appnexus&' + CONSTANTS.TARGETING_KEYS.SIZE + '_pagescience=300x250&' + CONSTANTS.TARGETING_KEYS.PRICE_BUCKET + '_pagescience=10.00&' + CONSTANTS.TARGETING_KEYS.AD_ID + '_pagescience=25bedd4813632d7&' + CONSTANTS.TARGETING_KEYS.BIDDER + '_pagescienc=pagescience&' + CONSTANTS.TARGETING_KEYS.SIZE + '_brightcom=300x250&' + CONSTANTS.TARGETING_KEYS.PRICE_BUCKET + '_brightcom=10.00&' + CONSTANTS.TARGETING_KEYS.AD_ID + '_brightcom=26e0795ab963896&' + CONSTANTS.TARGETING_KEYS.BIDDER + '_brightcom=brightcom&' + CONSTANTS.TARGETING_KEYS.SIZE + '_brealtime=300x250&' + CONSTANTS.TARGETING_KEYS.PRICE_BUCKET + '_brealtime=10.00&' + CONSTANTS.TARGETING_KEYS.AD_ID + '_brealtime=275bd666f5a5a5d&' + CONSTANTS.TARGETING_KEYS.BIDDER + '_brealtime=brealtime&' + CONSTANTS.TARGETING_KEYS.SIZE + '_pubmatic=300x250&' + CONSTANTS.TARGETING_KEYS.PRICE_BUCKET + '_pubmatic=10.00&' + CONSTANTS.TARGETING_KEYS.AD_ID + '_pubmatic=28f4039c636b6a7&' + CONSTANTS.TARGETING_KEYS.BIDDER + '_pubmatic=pubmatic&' + CONSTANTS.TARGETING_KEYS.SIZE + '_rubicon=300x600&' + CONSTANTS.TARGETING_KEYS.PRICE_BUCKET + '_rubicon=10.00&' + CONSTANTS.TARGETING_KEYS.AD_ID + '_rubicon=29019e2ab586a5a&' + CONSTANTS.TARGETING_KEYS.BIDDER + '_rubicon=rubicon';
       assert.equal(output, expected);
     });