Index: firmware/App/Modes/ModeTreatmentParams.c
===================================================================
diff -u -rccfd15568f1e3d304320c2babb2fd4bcf0413304 -r9bb9f9bb8b96f057b2ad8dd42c5ac4f0861c1d90
--- firmware/App/Modes/ModeTreatmentParams.c	(.../ModeTreatmentParams.c)	(revision ccfd15568f1e3d304320c2babb2fd4bcf0413304)
+++ firmware/App/Modes/ModeTreatmentParams.c	(.../ModeTreatmentParams.c)	(revision 9bb9f9bb8b96f057b2ad8dd42c5ac4f0861c1d90)
@@ -433,6 +433,11 @@
         rejReason = REQUEST_REJECT_REASON_UF_VOLUME_OUT_OF_RANGE;
     }
 
+    // store the user set ultrafiltration volume in pre-treatment parameters setup, if it is validated
+    if ( TRUE == accepted ) {
+        setUltrafiltrationVolumeOriginal( uFVolumeL );
+    }
+
     // Respond to set treatment parameters request message
     uFVolumeL = getTreatmentParameterF32( TREATMENT_PARAM_UF_VOLUME );
     uFVolumeMl = uFVolumeL * (F32)ML_PER_LITER;
@@ -832,7 +837,51 @@
     return result;
 }
 
+/*********************************************************************//**
+ * @brief
+ * The setUltrafiltrationVolumeOriginal function stores the floating point value
+ * of the original set treatment parameter's ultrafiltration volume by user in
+ * Pre-Treatment mode.
+ * @details Inputs: F32
+ * @details Outputs: none
+ * @param volume_L the original ultrafiltration volume value in liter.
+ * @return none
+ *************************************************************************/
+void setUltrafiltrationVolumeOriginal(F32 volume_L)
+{
+    origTreatmentParams.uFVolume_L = volume_L;
+}
 
+/*********************************************************************//**
+ * @brief
+ * The getUltrafiltrationVolumeOriginal function gets the floating point value
+ * of the original set treatment parameter's ultrafiltration volume by user in
+ * Pre-Treatment mode.
+ * @details Inputs: none
+ * @details Outputs: F32
+ * @param none
+ * @return the original ultrafiltration volume value in liter
+ *************************************************************************/
+F32 getUltrafiltrationVolumeOriginal()
+{
+    return origTreatmentParams.uFVolume_L;
+}
+
+/*********************************************************************//**
+ * @brief
+ * The getUltrafiltrationRateOriginal function gets the floating point value
+ * of the original ultrafiltration rate calculated by the set treatment parameter's
+ * ultrafiltration volume and treatment duration by user in Pre-Treatment mode.
+ * @details Inputs: none
+ * @details Outputs: F32
+ * @param none
+ * @return the original ultrafiltration rate value in mL/min
+ *************************************************************************/
+F32 getUltrafiltrationRateOriginal()
+{
+    return origTreatmentParams.uFVolume_L * ML_PER_LITER / origTreatmentParams.treatmentDuration_min;
+}
+
 /*************************************************************************
  *                       TEST SUPPORT FUNCTIONS
  *************************************************************************/