Index: firmware/App/Controllers/SyringePump.c
===================================================================
diff -u -r612b88c86886a73452e704f1e80f972392fbddc9 -rae44d1d2bd41782980f0accb46e6150a0f202ede
--- firmware/App/Controllers/SyringePump.c	(.../SyringePump.c)	(revision 612b88c86886a73452e704f1e80f972392fbddc9)
+++ firmware/App/Controllers/SyringePump.c	(.../SyringePump.c)	(revision ae44d1d2bd41782980f0accb46e6150a0f202ede)
@@ -38,7 +38,7 @@
 /// Default publication interval for syringe pump data.
 #define SYRINGE_PUMP_DATA_PUB_INTERVAL                ( MS_PER_SECOND / TASK_PRIORITY_INTERVAL )
 
-#define BD_SYRINGE_ID_RADIUS_CM                       ( 1.450 / 2.0 )                       ///< Radius from inner diameter (in cm) of supported BD syringe.
+#define BD_SYRINGE_ID_RADIUS_CM                       ( 1.4427 / 2.0 )                      ///< Radius from inner diameter (in cm) of supported BD syringe.
 /// Milliliters per mm of syringe plunger travel.
 #define SYRINGE_ML_PER_MM                             ( ( BD_SYRINGE_ID_RADIUS_CM * BD_SYRINGE_ID_RADIUS_CM ) * PI * 0.1 )
 #define SYRINGE_MM_PER_REV                            0.635                                 ///< Travel (in mm) per revolution.
@@ -1286,7 +1286,7 @@
     U32  preStop  = getTreatmentParameterU32( TREATMENT_PARAM_HEPARIN_PRE_STOP_TIME );
     U32  setTxDur = getTreatmentParameterU32( TREATMENT_PARAM_TREATMENT_DURATION );
     F32  hepDurHr = ( (F32)( setTxDur - preStop ) / (F32)MIN_PER_HOUR ) - HEPARIN_BOLUS_TIME_HR;
-    F32  txVolume = bolusVol + ( hepDurHr * contRate );
+    F32  txVolume = SYRINGE_PUMP_PRIME_VOLUME_ML + bolusVol + ( hepDurHr * contRate );
     F32  syringeVol = ( SYRINGE_PUMP_EMPTY_POS - (F32)pos ) / SYRINGE_MICRO_STEPS_PER_ML;
 
     // Handle ramp up