diff --git a/src/BIAnalyticsDataService/GetParticipantScreeningProfileData/GetParticipantScreeningProfileData.cs b/src/BIAnalyticsDataService/GetParticipantScreeningProfileData/GetParticipantScreeningProfileData.cs
index 87f2f084..b5827962 100644
--- a/src/BIAnalyticsDataService/GetParticipantScreeningProfileData/GetParticipantScreeningProfileData.cs
+++ b/src/BIAnalyticsDataService/GetParticipantScreeningProfileData/GetParticipantScreeningProfileData.cs
@@ -50,7 +50,7 @@ public async Task<HttpResponseData> Run([HttpTrigger(AuthorizationLevel.Anonymou
         }
         catch (Exception ex)
         {
-            _logger.LogError(ex, "GetParticipantScreeningProfileData: Failed to get participant profiles from the database.\nException: " + ex.Message);
+            _logger.LogError(ex, "GetParticipantScreeningProfileData: Failed to get participant profiles from the database.\nException: {Message}", ex.Message);
             return req.CreateResponse(HttpStatusCode.InternalServerError);
         }
     }
diff --git a/src/BIAnalyticsService/GetParticipantScreeningProfile/GetParticipantScreeningProfile.cs b/src/BIAnalyticsService/GetParticipantScreeningProfile/GetParticipantScreeningProfile.cs
index d6ca338f..b9840696 100644
--- a/src/BIAnalyticsService/GetParticipantScreeningProfile/GetParticipantScreeningProfile.cs
+++ b/src/BIAnalyticsService/GetParticipantScreeningProfile/GetParticipantScreeningProfile.cs
@@ -61,7 +61,7 @@ public async Task<HttpResponseData> Run([HttpTrigger(AuthorizationLevel.Anonymou
 
             if (!response.IsSuccessStatusCode)
             {
-                _logger.LogError($"Failed to retrieve profiles. Status Code: {response.StatusCode}");
+                _logger.LogError("Failed to retrieve profiles. Status Code: {StatusCode}", response.StatusCode);
                 var errorResponse = req.CreateResponse(response.StatusCode);
                 return errorResponse;
             }
@@ -78,7 +78,7 @@ public async Task<HttpResponseData> Run([HttpTrigger(AuthorizationLevel.Anonymou
         }
         catch (Exception ex)
         {
-            _logger.LogError(ex, "Exception when calling the GetParticipantScreeningProfileData function. \nUrl:{url}\nException: " + ex.Message, url);
+            _logger.LogError(ex, "Exception when calling the GetParticipantScreeningProfileData function. \nUrl:{url}\nException: {Message}", url, ex.Message);
             return req.CreateResponse(HttpStatusCode.InternalServerError);
         }
     }
diff --git a/src/ParticipantManagementService/GetParticipant/GetParticipant.cs b/src/ParticipantManagementService/GetParticipant/GetParticipant.cs
index b6d8a887..4fe420a8 100644
--- a/src/ParticipantManagementService/GetParticipant/GetParticipant.cs
+++ b/src/ParticipantManagementService/GetParticipant/GetParticipant.cs
@@ -31,7 +31,7 @@ public async Task<HttpResponseData> Run([HttpTrigger(AuthorizationLevel.Anonymou
 
         if (participant == null)
         {
-            _logger.LogError($"Participant with NHS Number {nhsNumber} not found.");
+            _logger.LogError("Participant with NHS Number {nhsNumber} not found.", nhsNumber);
             return req.CreateResponse(HttpStatusCode.NotFound);
         }