Index: firmware/App/Controllers/PresOccl.c
===================================================================
diff -u -r81c902fb595b9fcde229f8898d14e43312969f26 -r0a44f7a4d3ebcd820b5f10bd4fcce84da337d4b4
--- firmware/App/Controllers/PresOccl.c	(.../PresOccl.c)	(revision 81c902fb595b9fcde229f8898d14e43312969f26)
+++ firmware/App/Controllers/PresOccl.c	(.../PresOccl.c)	(revision 0a44f7a4d3ebcd820b5f10bd4fcce84da337d4b4)
@@ -529,15 +529,18 @@
     if ( getSoftwareConfigStatus( SW_CONFIG_DISABLE_VENOUS_PRESSURE_CHECK ) != SW_CONFIG_ENABLE_VALUE )
 #endif
     {
+        TREATMENT_STATE_T txState = getTreatmentState();
+
         // Check venous pressure is in range
         if ( TRUE == isPersistentAlarmTriggered( ALARM_ID_HD_VENOUS_PRESSURE_OUT_OF_RANGE, ( venPres > VENOUS_PRESSURE_MAX_MMHG || venPres < VENOUS_PRESSURE_MIN_MMHG ) ) )
         {
             SET_ALARM_WITH_1_F32_DATA( ALARM_ID_HD_VENOUS_PRESSURE_OUT_OF_RANGE, venPres );
         }
 
         // Check venous pressure during treatment mode
-        if ( MODE_TREA == getCurrentOperationMode() &&
-             TREATMENT_DIALYSIS_STATE == getTreatmentState() && getDialysisState() != DIALYSIS_SALINE_BOLUS_STATE )
+        if ( ( MODE_TREA == getCurrentOperationMode() ) &&
+             ( ( TREATMENT_BLOOD_PRIME_STATE == txState ) ||
+               ( ( TREATMENT_DIALYSIS_STATE == txState ) && ( getDialysisState() != DIALYSIS_SALINE_BOLUS_STATE ) ) ) )
         {
             F32 venLowLimit  = (F32)getTreatmentParameterS32( TREATMENT_PARAM_VEN_PRESSURE_LOW_LIMIT );
             F32 venHighLimit = (F32)getTreatmentParameterS32( TREATMENT_PARAM_VEN_PRESSURE_HIGH_LIMIT );