diff --git a/primed/dbgap/tests/test_views.py b/primed/dbgap/tests/test_views.py
index 0611010d..a561bd41 100644
--- a/primed/dbgap/tests/test_views.py
+++ b/primed/dbgap/tests/test_views.py
@@ -1386,8 +1386,16 @@ def test_access_pi_of_dbgap_application(self):
         response = self.client.get(self.get_url(self.obj.dbgap_project_id))
         self.assertEqual(response.status_code, 200)
 
+    def test_access_collaborator_for_dbgap_application(self):
+        """Returns successful response code when the user is a collaborator on the application."""
+        collaborator = UserFactory.create()
+        self.obj.collaborators.add(collaborator)
+        self.client.force_login(collaborator)
+        response = self.client.get(self.get_url(self.obj.dbgap_project_id))
+        self.assertEqual(response.status_code, 200)
+
     def test_access_pi_of_other_dbgap_application(self):
-        """Returns successful response code when the user is the PI of the application."""
+        """Raises permission denied code when the user is a PI of a different dbGaP application."""
         pi = self.obj.principal_investigator
         other_application = factories.dbGaPApplicationFactory.create()
         request = self.factory.get(self.get_url(other_application.dbgap_project_id))
@@ -1395,6 +1403,16 @@ def test_access_pi_of_other_dbgap_application(self):
         with self.assertRaises(PermissionDenied):
             self.get_view()(request, dbgap_project_id=other_application.dbgap_project_id)
 
+    def test_access_collaborator_for_other_dbgap_application(self):
+        """Raises permission denied code when the user is a collaborator on a different dbGaP application."""
+        collaborator = UserFactory.create()
+        self.obj.collaborators.add(collaborator)
+        other_application = factories.dbGaPApplicationFactory.create()
+        request = self.factory.get(self.get_url(other_application.dbgap_project_id))
+        request.user = collaborator
+        with self.assertRaises(PermissionDenied):
+            self.get_view()(request, dbgap_project_id=other_application.dbgap_project_id)
+
     def test_view_status_code_with_existing_object(self):
         """Returns a successful status code for an existing object pk."""
         # Only clients load the template.
@@ -3290,6 +3308,14 @@ def test_access_pi_of_dbgap_application(self):
         response = self.client.get(self.get_url(self.application.dbgap_project_id, self.snapshot.pk))
         self.assertEqual(response.status_code, 200)
 
+    def test_access_collaborator_for_dbgap_application(self):
+        """Returns successful response code when the user is a collaborator on the application."""
+        collaborator = UserFactory.create()
+        self.application.collaborators.add(collaborator)
+        self.client.force_login(collaborator)
+        response = self.client.get(self.get_url(self.application.dbgap_project_id, self.snapshot.pk))
+        self.assertEqual(response.status_code, 200)
+
     def test_access_pi_of_other_dbgap_application(self):
         """Returns successful response code when the user is the PI of the application."""
         pi = self.application.principal_investigator
@@ -3303,6 +3329,20 @@ def test_access_pi_of_other_dbgap_application(self):
                 dbgap_data_access_snapshot_pk=other_snapshot.pk,
             )
 
+    def test_access_collaborator_for_other_dbgap_application(self):
+        """Raises permission denied code when the user is a collaborator on a different dbGaP application."""
+        collaborator = UserFactory.create()
+        self.application.collaborators.add(collaborator)
+        other_snapshot = factories.dbGaPDataAccessSnapshotFactory.create()
+        request = self.factory.get(self.get_url(other_snapshot.dbgap_application.dbgap_project_id, other_snapshot.pk))
+        request.user = collaborator
+        with self.assertRaises(PermissionDenied):
+            self.get_view()(
+                request,
+                dbgap_project_id=other_snapshot.dbgap_application.dbgap_project_id,
+                dbgap_data_access_snapshot_pk=other_snapshot.pk,
+            )
+
     def test_access_without_user_permission(self):
         """Raises permission denied if user has no permissions."""
         user_no_perms = User.objects.create_user(username="test-none", password="test-none")
@@ -3647,6 +3687,17 @@ def test_access_pi_of_dbgap_application(self):
         )
         self.assertEqual(response.status_code, 200)
 
+    def test_access_collaborator_for_dbgap_application(self):
+        """Returns successful response code when the user is a collaborator on the application."""
+        dar = factories.dbGaPDataAccessRequestFactory.create(dbgap_dar_id=1)
+        collaborator = UserFactory.create()
+        dar.dbgap_data_access_snapshot.dbgap_application.collaborators.add(collaborator)
+        self.client.force_login(collaborator)
+        response = self.client.get(
+            self.get_url(dar.dbgap_data_access_snapshot.dbgap_application.dbgap_project_id, dar.dbgap_dar_id)
+        )
+        self.assertEqual(response.status_code, 200)
+
     def test_access_pi_of_other_dbgap_application(self):
         """Returns successful response code when the user is the PI of the application."""
         dar = factories.dbGaPDataAccessRequestFactory.create(dbgap_dar_id=1)
@@ -3665,6 +3716,25 @@ def test_access_pi_of_other_dbgap_application(self):
                 other_dar.dbgap_dar_id,
             )
 
+    def test_access_collaborator_for_other_dbgap_application(self):
+        """Raises permission denied code when the user is a collaborator on a different dbGaP application."""
+        dar = factories.dbGaPDataAccessRequestFactory.create(dbgap_dar_id=1)
+        collaborator = UserFactory.create()
+        dar.dbgap_data_access_snapshot.dbgap_application.collaborators.add(collaborator)
+        other_dar = factories.dbGaPDataAccessRequestFactory.create()
+        request = self.factory.get(
+            self.get_url(
+                other_dar.dbgap_data_access_snapshot.dbgap_application.dbgap_project_id, other_dar.dbgap_dar_id
+            )
+        )
+        request.user = collaborator
+        with self.assertRaises(PermissionDenied):
+            self.get_view()(
+                request,
+                other_dar.dbgap_data_access_snapshot.dbgap_application.dbgap_project_id,
+                other_dar.dbgap_dar_id,
+            )
+
     def test_dbgap_dar_id_does_not_exist(self):
         """Raises permission denied if user has no permissions."""
         request = self.factory.get(self.get_url(1, 2))
diff --git a/primed/dbgap/viewmixins.py b/primed/dbgap/viewmixins.py
index 4bff7e26..c78f6e29 100644
--- a/primed/dbgap/viewmixins.py
+++ b/primed/dbgap/viewmixins.py
@@ -22,6 +22,8 @@ def test_func(self):
         self.dbgap_application = self.get_dbgap_application()
         if not self.dbgap_application:
             is_pi = False
+            is_collaborator = False
         else:
             is_pi = self.dbgap_application.principal_investigator == self.request.user
-        return has_acm_permission or is_pi
+            is_collaborator = self.request.user in self.dbgap_application.collaborators.all()
+        return has_acm_permission or is_pi or is_collaborator