Index: firmware/App/Modes/ModeTreatment.h
===================================================================
diff -u -re9e339870c5ed01230963f00d400331ab879c91f -rd387dc3cd21e6f1fb7e161032f30eb49a9c1b48e
--- firmware/App/Modes/ModeTreatment.h	(.../ModeTreatment.h)	(revision e9e339870c5ed01230963f00d400331ab879c91f)
+++ firmware/App/Modes/ModeTreatment.h	(.../ModeTreatment.h)	(revision d387dc3cd21e6f1fb7e161032f30eb49a9c1b48e)
@@ -85,6 +85,15 @@
     U32 ufState;                                                    ///< Ultrafiltration state.
 } UF_DATA_PAYLOAD_T;
 
+/// Payload record structure for isolated UF data broadcast messages.
+typedef struct
+{
+    U32 mDuration;                                              ///< Isolated UF duration in minutes.
+    U32 mSetVolume;                                             ///< Isolated UF set volume in mL.
+    U32 mVolumeDelivered;                                       ///< Isolated UF volume delivered in mL.
+    U32 mRate;                                                  ///< Isolated UF rate in mL/min.
+} ISOLATED_UF_DATA_PAYLOAD_T;
+
 /// Payload record structure for the in-line pressure limits change response.
 typedef struct
 {
@@ -125,6 +134,13 @@
 U32  getTreatmentStartTimeStamp( void );                            // Get the treatment start time stamp
 U32  getTreatmentEndTimeStamp( void );                              // Get the treatment end time stamp
 
+BOOL setIsolatedUFSettings( U32 durationMin, F32 ufVolumeMl );      // Set isolated UF duration, goal, and rate
+void signalStartIsolatedUF( BOOL midTreatment );                    // Request transition to isolated UF (F = post-treatment or standalone entry path)
+BOOL isIsolatedUFMidTreatment( void );                              // Determine whether isolated UF was started during HD/HDF
+U32  getIsolatedUFDurationMin( void );                              // Get isolated UF duration
+F32  getIsolatedUFSetVolumeMl( void );                              // Get isolated UF set volume
+F32  getIsolatedUFRateMlMin( void );                                // Get isolated UF rate
+
 // MSG_ID_TD_PRESSURE_LIMITS_CHANGE_RESPONSE
 BOOL sendPressureLimitsChangeResponse( PRESSURE_LIMIT_CHANGE_RESPONSE_T *data );