Index: firmware/App/Controllers/BloodLeak.c
===================================================================
diff -u -rf760ffc4b10556e5186e9ceb90294262063440ca -raad5e13d6c6b65fe869668fd987af64b75d9e3b8
--- firmware/App/Controllers/BloodLeak.c	(.../BloodLeak.c)	(revision f760ffc4b10556e5186e9ceb90294262063440ca)
+++ firmware/App/Controllers/BloodLeak.c	(.../BloodLeak.c)	(revision aad5e13d6c6b65fe869668fd987af64b75d9e3b8)
@@ -642,6 +642,16 @@
     // If the blood leak status bit is low (0) it means blood has not been detected, otherwise, blood has been detected
     bloodLeakStatus.data = ( BLOOD_LEAK_STATUS_BIT_LOW == getFPGABloodLeakStatus() ? BLOOD_LEAK_NOT_DETECTED : BLOOD_LEAK_DETECTED );
 
+#ifdef DIALYZER_REPRIME_ENABLED
+// exempt blood leak alarm while performing a dialyzer de-prime as air will be pushed past sensor and appear to be blood
+if ( ( TREATMENT_DIALYSIS_STATE == getTreatmentState() ) && ( DIALYSIS_DIALYZER_REPRIME_STATE == getDialysisState() ) )
+{
+    bloodLeakPersistenceCtr = 0;
+}
+else
+{
+#endif
+
     // Check status reading and act upon
     if ( BLOOD_LEAK_DETECTED == getBloodLeakStatus() )
     {
@@ -673,6 +683,10 @@
         }
     }
 
+#ifdef DIALYZER_REPRIME_ENABLED
+}
+#endif
+
     if ( TRUE == bloodLeakExitNormalRequested )
     {
         bloodLeakExitNormalRequested = FALSE;