diff --git a/application/quality_checker/quality_checker.py b/application/quality_checker/quality_checker.py
index 451f965bf..cff33e50b 100644
--- a/application/quality_checker/quality_checker.py
+++ b/application/quality_checker/quality_checker.py
@@ -12,7 +12,7 @@
     check_pharmacy_profiling,
 )
 from common.commissioned_service_type import BLOOD_PRESSURE, CONTRACEPTION, PALLIATIVE_CARE
-from common.dos_db_connection import connect_to_dos_db_replica
+from common.dos_db_connection import connect_to_db_reader
 from common.middlewares import unhandled_exception_logging
 
 logger = Logger()
@@ -37,7 +37,7 @@ def lambda_handler(event: EventBridgeEvent, context: LambdaContext) -> None:  #
 
 def check_dos_data_quality() -> None:
     """Check the data quality of the dos database."""
-    with connect_to_dos_db_replica() as db_connection:
+    with connect_to_db_reader() as db_connection:
         # Checks matched odscode services for pharmacy profiling
         check_pharmacy_profiling(db_connection)
 
diff --git a/application/quality_checker/tests/test_check_dos.py b/application/quality_checker/tests/test_check_dos.py
index 3d0ff9b4e..1354bf271 100644
--- a/application/quality_checker/tests/test_check_dos.py
+++ b/application/quality_checker/tests/test_check_dos.py
@@ -1,11 +1,11 @@
 from unittest.mock import MagicMock, call, patch
 
-from application.common.commissioned_service_type import BLOOD_PRESSURE, CONTRACEPTION
 from application.quality_checker.check_dos import (
     check_for_multiple_of_service_type,
     check_incorrect_zcode_profiling,
     check_pharmacy_profiling,
 )
+from common.commissioned_service_type import BLOOD_PRESSURE, CONTRACEPTION
 
 FILE_PATH = "application.quality_checker.check_dos"
 
diff --git a/application/quality_checker/tests/test_quality_checker.py b/application/quality_checker/tests/test_quality_checker.py
index 02385bda7..496a0721a 100644
--- a/application/quality_checker/tests/test_quality_checker.py
+++ b/application/quality_checker/tests/test_quality_checker.py
@@ -4,8 +4,8 @@
 import pytest
 from aws_lambda_powertools.utilities.typing import LambdaContext
 
-from application.common.commissioned_service_type import BLOOD_PRESSURE, CONTRACEPTION, PALLIATIVE_CARE
 from application.quality_checker.quality_checker import check_dos_data_quality, lambda_handler
+from common.commissioned_service_type import BLOOD_PRESSURE, CONTRACEPTION, PALLIATIVE_CARE
 
 FILE_PATH = "application.quality_checker.quality_checker"
 
@@ -24,9 +24,11 @@ class LambdaContext:
     return LambdaContext()
 
 
+@patch(f"{FILE_PATH}.send_finished_metric")
 @patch(f"{FILE_PATH}.check_dos_data_quality")
 def test_lambda_handler(
     mock_check_dos_data_quality: MagicMock,
+    mock_send_finished_metric: MagicMock,
     lambda_context: LambdaContext,
 ) -> None:
     # Arrange
@@ -35,13 +37,14 @@ def test_lambda_handler(
     lambda_handler(event, lambda_context)
     # Assert
     mock_check_dos_data_quality.assert_called_once_with()
+    mock_send_finished_metric.assert_called_once_with()
 
 
 @patch(f"{FILE_PATH}.check_incorrect_zcode_profiling")
 @patch(f"{FILE_PATH}.check_pharmacy_profiling")
-@patch(f"{FILE_PATH}.connect_to_dos_db_replica")
+@patch(f"{FILE_PATH}.connect_to_db_reader")
 def test_check_dos_data_quality(
-    mock_connect_to_dos_db_replica: MagicMock,
+    mock_connect_to_db_reader: MagicMock,
     mock_check_pharmacy_profiling: MagicMock,
     mock_check_incorrect_zcode_profiling: MagicMock,
 ) -> None:
@@ -49,14 +52,14 @@ def test_check_dos_data_quality(
     # Act
     check_dos_data_quality()
     # Assert
-    mock_connect_to_dos_db_replica.assert_called_once_with()
+    mock_connect_to_db_reader.assert_called_once_with()
     mock_check_pharmacy_profiling.assert_called_once_with(
-        mock_connect_to_dos_db_replica().__enter__(),
+        mock_connect_to_db_reader().__enter__(),
     )
     mock_check_incorrect_zcode_profiling.assert_has_calls(
         calls=[
-            call(mock_connect_to_dos_db_replica().__enter__(), PALLIATIVE_CARE),
-            call(mock_connect_to_dos_db_replica().__enter__(), BLOOD_PRESSURE),
-            call(mock_connect_to_dos_db_replica().__enter__(), CONTRACEPTION),
+            call(mock_connect_to_db_reader().__enter__(), PALLIATIVE_CARE),
+            call(mock_connect_to_db_reader().__enter__(), BLOOD_PRESSURE),
+            call(mock_connect_to_db_reader().__enter__(), CONTRACEPTION),
         ],
     )