Index: firmware/App/Modes/ModePostTreat.c
===================================================================
diff -u -r16b178ff7528cb09c66413d19980a4eb0d13b48e -r368e2fde80a5cc108f61c021830c684e05fb62d5
--- firmware/App/Modes/ModePostTreat.c	(.../ModePostTreat.c)	(revision 16b178ff7528cb09c66413d19980a4eb0d13b48e)
+++ firmware/App/Modes/ModePostTreat.c	(.../ModePostTreat.c)	(revision 368e2fde80a5cc108f61c021830c684e05fb62d5)
@@ -129,9 +129,6 @@
     signalDialInPumpHardStop();
 
     stopSyringePump();
-
-    // Send treatment log data to UI
-    sendTreatmentLogData( &treatmentLogData );
 }
 
 /*********************************************************************//**
@@ -168,6 +165,23 @@
 
 /*********************************************************************//**
  * @brief
+ * The handleTreatmentLogDataRequest sends treatment log data to UI upon
+ * UI requests.
+ * @details Inputs: treatmentLogData
+ * @details Outputs: Sent treatment log data to UI
+ * @return none
+ *************************************************************************/
+void handleTreatmentLogDataRequest( void )
+{
+    BOOL accepted = TRUE;
+    REQUEST_REJECT_REASON_CODE_T rejReason = REQUEST_REJECT_REASON_NONE;
+
+    // Send treatment log data to UI
+    sendTreatmentLogData( accepted, rejReason, &treatmentLogData );
+}
+
+/*********************************************************************//**
+ * @brief
  * The signalUserConfirmPatientDisconnection signals post-treatment mode
  * user has confirmed patient disconnection.
  * @details Inputs: none
Index: firmware/App/Modes/ModePostTreat.h
===================================================================
diff -u -r711e8c1a6d5024fa7d013ae37e632f59dc2268fe -r368e2fde80a5cc108f61c021830c684e05fb62d5
--- firmware/App/Modes/ModePostTreat.h	(.../ModePostTreat.h)	(revision 711e8c1a6d5024fa7d013ae37e632f59dc2268fe)
+++ firmware/App/Modes/ModePostTreat.h	(.../ModePostTreat.h)	(revision 368e2fde80a5cc108f61c021830c684e05fb62d5)
@@ -83,6 +83,7 @@
 void transitionToPostTreatmentMode( void );                         // Prepares for transition to post-treatment mode
 U32  execPostTreatmentMode( void );                                 // Execute the post-treatment mode state machine (call from OperationModes)
 
+void handleTreatmentLogDataRequest( void );
 void signalUserConfirmPatientDisconnection( void );
 void signalUserConfirmDisposableRemoval( void );
 void signalAlarmActionToPostTreatmentMode( ALARM_ACTION_T action ); // Execute alarm action as appropriate for post-treatment mode
Index: firmware/App/Services/SystemComm.c
===================================================================
diff -u -r2346a0cb59957d90fe61cb3bff4ec7ffc3df10a4 -r368e2fde80a5cc108f61c021830c684e05fb62d5
--- firmware/App/Services/SystemComm.c	(.../SystemComm.c)	(revision 2346a0cb59957d90fe61cb3bff4ec7ffc3df10a4)
+++ firmware/App/Services/SystemComm.c	(.../SystemComm.c)	(revision 368e2fde80a5cc108f61c021830c684e05fb62d5)
@@ -1225,6 +1225,10 @@
             handleDisposableRemovalConfirmCmd( message );
             break;
 
+        case MSG_ID_UI_TREATMENT_LOG_DATA_REQUEST:
+            handleUITreatmentLogDataRequest( message );
+            break;
+
         case MSG_ID_DG_COMMAND_RESPONSE:
             handleDGCmdResp( message );
             break;
Index: firmware/App/Services/SystemCommMessages.c
===================================================================
diff -u -r16b178ff7528cb09c66413d19980a4eb0d13b48e -r368e2fde80a5cc108f61c021830c684e05fb62d5
--- firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision 16b178ff7528cb09c66413d19980a4eb0d13b48e)
+++ firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision 368e2fde80a5cc108f61c021830c684e05fb62d5)
@@ -596,10 +596,28 @@
  *************************************************************************/
 BOOL sendDisposableRemovalConfirmResponse( BOOL accepted, U32 reason )
 {
-    return sendUIResponseMsg( MSG_ID_UI_DISPOSABLE_REMOVAL_CONFIRM_RESPONSE, accepted, reason );
+    return sendUIResponseMsg( MSG_ID_HD_DISPOSABLE_REMOVAL_CONFIRM_RESPONSE, accepted, reason );
 }
 
 /*********************************************************************//**
+ * @brief
+ * The handleUITreatmentLogDataRequest function handles UI treatment log data request.
+ * @details Inputs: none
+ * @details Outputs: message handled
+ * @param message a pointer to the message to handle
+ * @return none.
+ *************************************************************************/
+void handleUITreatmentLogDataRequest( MESSAGE_T *message )
+{
+    if ( 0 == message->hdr.payloadLen )
+    {
+        handleTreatmentLogDataRequest();
+    }
+
+    sendAckResponseMsg( (MSG_ID_T)message->hdr.msgID, COMM_BUFFER_OUT_CAN_HD_2_UI, FALSE );
+}
+
+/*********************************************************************//**
  * @brief
  * The sendTreatmentLogData function constructs a treatment log data message
  * for UI and queues the msg for transmit on the appropriate CAN channel.
@@ -608,16 +626,21 @@
  * @param logDataPtr treatment log data record pointer
  * @return TRUE if msg successfully queued for transmit, FALSE if not
  *************************************************************************/
-BOOL sendTreatmentLogData( TREATMENT_LOG_DATA_PAYLOAD_T *logDataPtr )
+BOOL sendTreatmentLogData( BOOL accepted, U32 reason, TREATMENT_LOG_DATA_PAYLOAD_T *logDataPtr )
 {
     MESSAGE_T msg;
+    U08 *payloadPtr = msg.payload;
 
     // Create a message record
     blankMessage( &msg );
-    msg.hdr.msgID = MSG_ID_HD_TREATMENT_LOG_DATA;
-    msg.hdr.payloadLen = sizeof( TREATMENT_LOG_DATA_PAYLOAD_T );
+    msg.hdr.msgID = MSG_ID_HD_TREATMENT_LOG_DATA_RESPONSE;
+    msg.hdr.payloadLen = sizeof( BOOL ) + sizeof( U32 ) + sizeof( TREATMENT_LOG_DATA_PAYLOAD_T );
 
-    memcpy( msg.payload, logDataPtr, sizeof( TREATMENT_LOG_DATA_PAYLOAD_T ) );
+    memcpy( payloadPtr, &accepted, sizeof( U32 ) );
+    payloadPtr += sizeof( U32 );
+    memcpy( payloadPtr, &reason, sizeof( U32 ) );
+    payloadPtr += sizeof( U32 );
+    memcpy( payloadPtr, logDataPtr, sizeof( TREATMENT_LOG_DATA_PAYLOAD_T ) );
 
     // Serialize the message (w/ sync, CRC, and appropriate CAN padding) and add serialized message data to appropriate comm buffer
     return serializeMessage( msg, COMM_BUFFER_OUT_CAN_HD_2_UI, ACK_REQUIRED );
Index: firmware/App/Services/SystemCommMessages.h
===================================================================
diff -u -r16b178ff7528cb09c66413d19980a4eb0d13b48e -r368e2fde80a5cc108f61c021830c684e05fb62d5
--- firmware/App/Services/SystemCommMessages.h	(.../SystemCommMessages.h)	(revision 16b178ff7528cb09c66413d19980a4eb0d13b48e)
+++ firmware/App/Services/SystemCommMessages.h	(.../SystemCommMessages.h)	(revision 368e2fde80a5cc108f61c021830c684e05fb62d5)
@@ -194,12 +194,15 @@
 // MSG_ID_UI_DISPOSABLE_REMOVAL_CONFIRM
 void handleDisposableRemovalConfirmCmd( MESSAGE_T *message );
 
-// MSG_ID_UI_DISPOSABLE_REMOVAL_CONFIRM_RESPONSE
+// MSG_ID_HD_DISPOSABLE_REMOVAL_CONFIRM_RESPONSE
 BOOL sendDisposableRemovalConfirmResponse( BOOL accepted, U32 reason );
 
-// MSG_ID_HD_TREATMENT_LOG_DATA
-BOOL sendTreatmentLogData( TREATMENT_LOG_DATA_PAYLOAD_T *logDataPtr );
+// MSG_ID_UI_TREATMENT_LOG_DATA_REQUEST
+void handleUITreatmentLogDataRequest( MESSAGE_T *message );
 
+// MSG_ID_HD_TREATMENT_LOG_DATA_RESPONSE
+BOOL sendTreatmentLogData( BOOL accepted, U32 reason, TREATMENT_LOG_DATA_PAYLOAD_T *logDataPtr );
+
 // MSG_ID_SET_DG_DIALYSATE_TEMP_TARGETS
 BOOL sendDialysateTempTargetsToDG( F32 primary, F32 trimmer );