diff --git a/src/fides/api/api/v1/endpoints/privacy_request_endpoints.py b/src/fides/api/api/v1/endpoints/privacy_request_endpoints.py
index c8dc17a273..84cb453a63 100644
--- a/src/fides/api/api/v1/endpoints/privacy_request_endpoints.py
+++ b/src/fides/api/api/v1/endpoints/privacy_request_endpoints.py
@@ -2,6 +2,7 @@
 
 import csv
 import io
+import json
 from collections import defaultdict
 from datetime import datetime
 from typing import (
@@ -148,6 +149,7 @@
 from fides.api.util.enums import ColumnSort
 from fides.api.util.fuzzy_search_utils import get_decrypted_identities_automaton
 from fides.api.util.logger import Pii
+from fides.api.util.storage_util import storage_json_encoder
 from fides.common.api.scope_registry import (
     PRIVACY_REQUEST_CALLBACK_RESUME,
     PRIVACY_REQUEST_CREATE,
@@ -2657,8 +2659,13 @@ def get_test_privacy_request_results(
         )
         privacy_request.save(db=db)
 
+    # Escape datetime and ObjectId values
+    raw_data = privacy_request.get_raw_access_results()
+    escaped_json = json.dumps(raw_data, indent=2, default=storage_json_encoder)
+    escaped_data = json.loads(escaped_json)
+
     return {
         "privacy_request_id": privacy_request.id,
         "status": privacy_request.status,
-        "results": privacy_request.get_raw_access_results(),
+        "results": escaped_data,
     }
diff --git a/tests/ops/api/v1/endpoints/test_privacy_request_endpoints.py b/tests/ops/api/v1/endpoints/test_privacy_request_endpoints.py
index 21007687ec..aaf64d4e7b 100644
--- a/tests/ops/api/v1/endpoints/test_privacy_request_endpoints.py
+++ b/tests/ops/api/v1/endpoints/test_privacy_request_endpoints.py
@@ -8365,7 +8365,6 @@ def test_get_access_results_contributor_but_disabled(
 
 
 @pytest.mark.integration
-@pytest.mark.integration_postgres
 class TestPrivacyRequestFilteredResults:
     @pytest.fixture(scope="function")
     def default_access_policy(self, db) -> None:
@@ -8427,15 +8426,18 @@ def test_filtered_results_with_roles(
         )
         assert response.status_code == expected_status
 
+    @pytest.mark.integration_postgres
     @pytest.mark.usefixtures("default_access_policy", "postgres_integration_db")
-    def test_filtered_results(
+    def test_filtered_results_postgres(
         self,
         connection_config,
-        dataset_config,
+        postgres_example_test_dataset_config,
         api_client: TestClient,
         generate_auth_header,
     ) -> None:
-        dataset_url = get_connection_dataset_url(connection_config, dataset_config)
+        dataset_url = get_connection_dataset_url(
+            connection_config, postgres_example_test_dataset_config
+        )
         auth_header = generate_auth_header(scopes=[DATASET_TEST])
         response = api_client.post(
             dataset_url + "/test",
@@ -8459,3 +8461,42 @@ def test_filtered_results(
             "status",
             "results",
         }
+
+    @pytest.mark.integration_mongo
+    @pytest.mark.usefixtures("default_access_policy")
+    def test_filtered_results_mongo(
+        self,
+        mongo_connection_config,
+        mongo_dataset_config,
+        api_client: TestClient,
+        generate_auth_header,
+    ) -> None:
+        dataset_url = get_connection_dataset_url(
+            mongo_connection_config, mongo_dataset_config
+        )
+        auth_header = generate_auth_header(scopes=[DATASET_TEST])
+        response = api_client.post(
+            dataset_url + "/test",
+            headers=auth_header,
+            json={
+                "email": "employee-1@example.com",
+                "postgres_example_test_dataset:customer:id": 1,
+            },
+        )
+        assert response.status_code == HTTP_200_OK
+
+        privacy_request_id = response.json()["privacy_request_id"]
+        url = V1_URL_PREFIX + PRIVACY_REQUEST_FILTERED_RESULTS.format(
+            privacy_request_id=privacy_request_id
+        )
+        auth_header = generate_auth_header(scopes=[PRIVACY_REQUEST_READ_ACCESS_RESULTS])
+        response = api_client.get(
+            url,
+            headers=auth_header,
+        )
+        assert response.status_code == HTTP_200_OK
+        assert set(response.json().keys()) == {
+            "privacy_request_id",
+            "status",
+            "results",
+        }