diff --git a/modules/pubmaticBidAdapter.js b/modules/pubmaticBidAdapter.js
index 452f6149091..354addc6def 100644
--- a/modules/pubmaticBidAdapter.js
+++ b/modules/pubmaticBidAdapter.js
@@ -1,6 +1,7 @@
 import * as utils from 'src/utils';
 import { registerBidder } from 'src/adapters/bidderFactory';
 import { BANNER, VIDEO } from 'src/mediaTypes';
+import {config} from 'src/config';
 const constants = require('src/constants.json');
 
 const BIDDER_CODE = 'pubmatic';
@@ -8,6 +9,7 @@ const ENDPOINT = '//hbopenbid.pubmatic.com/translator?source=prebid-client';
 const USYNCURL = '//ads.pubmatic.com/AdServer/js/showad.js#PIX&kdntuid=1&p=';
 const DEFAULT_CURRENCY = 'USD';
 const AUCTION_TYPE = 1;
+const PUBMATIC_DIGITRUST_KEY = 'nFIn8aLzbd';
 const UNDEFINED = undefined;
 const CUSTOM_PARAMS = {
   'kadpageurl': '', // Custom page url
@@ -275,6 +277,45 @@ function _createImpressionObject(bid, conf) {
   return impObj;
 }
 
+function _getDigiTrustObject(key) {
+  function getDigiTrustId() {
+    let digiTrustUser = window.DigiTrust && (config.getConfig('digiTrustId') || window.DigiTrust.getUser({member: key}));
+    return (digiTrustUser && digiTrustUser.success && digiTrustUser.identity) || null;
+  }
+  let digiTrustId = getDigiTrustId();
+  // Verify there is an ID and this user has not opted out
+  if (!digiTrustId || (digiTrustId.privacy && digiTrustId.privacy.optout)) {
+    return null;
+  }
+  return digiTrustId;
+}
+
+function _handleDigitrustId(eids) {
+  let digiTrustId = _getDigiTrustObject(PUBMATIC_DIGITRUST_KEY);
+  if (digiTrustId !== null) {
+    eids.push({
+      'source': 'digitru.st',
+      'uids': [
+        {
+          'id': digiTrustId.id || '',
+          'atype': 1,
+          'ext': {
+            'keyv': parseInt(digiTrustId.keyv) || 0
+          }
+        }
+      ]
+    });
+  }
+}
+
+function _handleEids(payload) {
+  let eids = [];
+  _handleDigitrustId(eids);
+  if (eids.length > 0) {
+    payload.user.eids = eids;
+  }
+}
+
 export const spec = {
   code: BIDDER_CODE,
   supportedMediaTypes: [BANNER, VIDEO],
@@ -414,6 +455,8 @@ export const spec = {
       utils.logWarn(BIDDER_CODE + ': dctr value not found in 1st adunit, ignoring values from subsequent adunits');
     }
 
+    _handleEids(payload);
+
     return {
       method: 'POST',
       url: ENDPOINT,
diff --git a/test/spec/modules/pubmaticBidAdapter_spec.js b/test/spec/modules/pubmaticBidAdapter_spec.js
index be3b59c1a80..4fca6656e46 100644
--- a/test/spec/modules/pubmaticBidAdapter_spec.js
+++ b/test/spec/modules/pubmaticBidAdapter_spec.js
@@ -1,6 +1,7 @@
 import {expect} from 'chai';
 import {spec} from 'modules/pubmaticBidAdapter';
 import * as utils from 'src/utils';
+import {config} from 'src/config';
 const constants = require('src/constants.json');
 
 describe('PubMatic adapter', function () {
@@ -448,6 +449,197 @@ describe('PubMatic adapter', function () {
   		  expect(data.imp[0].ext.pmZoneId).to.equal(bidRequests[0].params.pmzoneid.split(',').slice(0, 50).map(id => id.trim()).join()); // pmzoneid
   		});
 
+      it('Request should have digitrust params', function() {
+        window.DigiTrust = {
+          getUser: function () {
+          }
+        };
+        var bidRequest = {};
+        let sandbox = sinon.sandbox.create();
+        sandbox.stub(window.DigiTrust, 'getUser').callsFake(() =>
+          ({
+            success: true,
+            identity: {
+              privacy: {optout: false},
+              id: 'testId',
+              keyv: 4
+            }
+          })
+        );
+
+        let request = spec.buildRequests(bidRequests, bidRequest);
+        let data = JSON.parse(request.data);
+        expect(data.user.eids).to.deep.equal([{
+          'source': 'digitru.st',
+          'uids': [{
+            'id': 'testId',
+            'atype': 1,
+            'ext': {
+              'keyv': 4
+            }
+          }]
+        }]);
+        sandbox.restore();
+        delete window.DigiTrust;
+      });
+
+      it('Request should not have digitrust params when DigiTrust not loaded', function() {
+        let request = spec.buildRequests(bidRequests, {});
+        let data = JSON.parse(request.data);
+        expect(data.user.eids).to.deep.equal(undefined);
+      });
+
+      it('Request should not have digitrust params due to optout', function() {
+        window.DigiTrust = {
+          getUser: function () {
+          }
+        };
+        let sandbox = sinon.sandbox.create();
+        sandbox.stub(window.DigiTrust, 'getUser').callsFake(() =>
+          ({
+            success: true,
+            identity: {
+              privacy: {optout: true},
+              id: 'testId',
+              keyv: 4
+            }
+          })
+        );
+
+        let request = spec.buildRequests(bidRequests, {});
+        let data = JSON.parse(request.data);
+        expect(data.user.eids).to.deep.equal(undefined);
+        sandbox.restore();
+        delete window.DigiTrust;
+      });
+
+      it('Request should not have digitrust params due to failure', function() {
+        window.DigiTrust = {
+          getUser: function () {
+          }
+        };
+        let sandbox = sinon.sandbox.create();
+        sandbox.stub(window.DigiTrust, 'getUser').callsFake(() =>
+          ({
+            success: false,
+            identity: {
+              privacy: {optout: false},
+              id: 'testId',
+              keyv: 4
+            }
+          })
+        );
+
+        let request = spec.buildRequests(bidRequests, {});
+        let data = JSON.parse(request.data);
+        expect(data.user.eids).to.deep.equal(undefined);
+        sandbox.restore();
+        delete window.DigiTrust;
+      });
+
+      describe('DigiTrustId from config', function() {
+        var origGetConfig;
+        let sandbox;
+        beforeEach(() => {
+          sandbox = sinon.sandbox.create();
+          window.DigiTrust = {
+            getUser: sandbox.spy()
+          };
+        });
+
+        afterEach(() => {
+          sandbox.restore();
+          delete window.DigiTrust;
+        });
+
+        it('Request should have digiTrustId config params', function() {
+          sandbox.stub(config, 'getConfig').callsFake((key) => {
+            var config = {
+              digiTrustId: {
+                success: true,
+                identity: {
+                  privacy: {optout: false},
+                  id: 'testId',
+                  keyv: 4
+                }
+              }
+            };
+            return config[key];
+          });
+
+          let request = spec.buildRequests(bidRequests, {});
+          let data = JSON.parse(request.data);
+          expect(data.user.eids).to.deep.equal([{
+            'source': 'digitru.st',
+            'uids': [{
+              'id': 'testId',
+              'atype': 1,
+              'ext': {
+                'keyv': 4
+              }
+            }]
+          }]);
+          // should not have called DigiTrust.getUser()
+          expect(window.DigiTrust.getUser.notCalled).to.equal(true);
+        });
+
+        it('Request should not have digiTrustId config params due to optout', function() {
+          sandbox.stub(config, 'getConfig').callsFake((key) => {
+            var config = {
+              digiTrustId: {
+                success: true,
+                identity: {
+                  privacy: {optout: true},
+                  id: 'testId',
+                  keyv: 4
+                }
+              }
+            }
+            return config[key];
+          });
+          let request = spec.buildRequests(bidRequests, {});
+          let data = JSON.parse(request.data);
+          expect(data.user.eids).to.deep.equal(undefined);
+          // should not have called DigiTrust.getUser()
+          expect(window.DigiTrust.getUser.notCalled).to.equal(true);
+        });
+
+        it('Request should not have digiTrustId config params due to failure', function() {
+          sandbox.stub(config, 'getConfig').callsFake((key) => {
+            var config = {
+              digiTrustId: {
+                success: false,
+                identity: {
+                  privacy: {optout: false},
+                  id: 'testId',
+                  keyv: 4
+                }
+              }
+            }
+            return config[key];
+          });
+
+          let request = spec.buildRequests(bidRequests, {});
+          let data = JSON.parse(request.data);
+          expect(data.user.eids).to.deep.equal(undefined);
+          // should not have called DigiTrust.getUser()
+          expect(window.DigiTrust.getUser.notCalled).to.equal(true);
+        });
+
+        it('Request should not have digiTrustId config params if they do not exist', function() {
+          sandbox.stub(config, 'getConfig').callsFake((key) => {
+            var config = {};
+            return config[key];
+          });
+
+          let request = spec.buildRequests(bidRequests, {});
+          let data = JSON.parse(request.data);
+          expect(data.user.eids).to.deep.equal(undefined);
+          // should have called DigiTrust.getUser() once
+          expect(window.DigiTrust.getUser.calledOnce).to.equal(true);
+        });
+      });
+
       it('Request params check for video ad', function () {
         let request = spec.buildRequests(videoBidRequests);
         let data = JSON.parse(request.data);