Index: firmware/App/Controllers/SyringePump.c
===================================================================
diff -u -rfba69244d94307e50fefaa1e88bcbb979584461e -r9eca7842221b1510b0b7b926a3a792e09b4c80cb
--- firmware/App/Controllers/SyringePump.c	(.../SyringePump.c)	(revision fba69244d94307e50fefaa1e88bcbb979584461e)
+++ firmware/App/Controllers/SyringePump.c	(.../SyringePump.c)	(revision 9eca7842221b1510b0b7b926a3a792e09b4c80cb)
@@ -84,6 +84,7 @@
 #define SYRINGE_FORCE_OCCLUSION_DIFF_V                0.5F                                  ///< Force sensor difference (in V) which an occlusion alarm is triggered.
 #define SYRINGE_FORCE_PLUNGER_THRESHOLD_V             0.25F                                 ///< Force sensor threshold (in V) above which we have engaged with plunger.
 #define SYRINGE_PUMP_SYRINGE_DETECT_THRESHOLD_V       2.0F                                  ///< Syringe pump syringe detected threshold (in V).
+#define SYRINGE_PUMP_SYRINGE_DETECT_DEBOUNCE_TIME_MS  ( 0.5 * MS_PER_SECOND )               ///< Syringe pump syringe detect debounce time in milliseconds.
 #define SYRINGE_PUMP_HOME_DETECT_THRESHOLD_V          0.25F                                 ///< Syringe pump home detected threshold (in V).
 #define SYRINGE_PUMP_EMPTY_THRESHOLD_V                2.5F                                  ///< Syringe pump empty detected threshold (in V).
 #define SYRINGE_PUMP_PRELOAD_MARGIN_VOLUME_ML         1.0F                                  ///< Target syringe preload margin volume (in mL). Total to deliver plus this give syringe load position.
@@ -255,6 +256,8 @@
 
 static U32 syringePumpEmptyForceCount;                                          ///< Counter for empty syringe detection.
 
+static U32 syringePumpSyringeDetectDebounceStartTime;                           ///< Syringe pump syringe detect debounce start time.
+
 // ********** private function prototypes **********
 
 static void resetSyringePumpRequestFlags( void );
@@ -924,18 +927,30 @@
  * @brief
  * The isSyringeDetected function determines whether a syringe is currently
  * detected.
- * @details Inputs: syringePumpMeasSyringeDetectionSwitch
- * @details Outputs: none
+ * @details Inputs: syringePumpSyringeDetectDebounceStartTime
+ * @details Outputs: syringePumpSyringeDetectDebounceStartTime
  * @return TRUE if syringe detected, FALSE if not
  *************************************************************************/
 BOOL isSyringeDetected( void )
 {
-    BOOL result = FALSE;
+    // Assume the syringe is there until the debounce time has elapsed
+    BOOL result = TRUE;
 
-    if ( getSyringePumpSyringeDetectorV() >= SYRINGE_PUMP_SYRINGE_DETECT_THRESHOLD_V )
+    if ( getSyringePumpSyringeDetectorV() < SYRINGE_PUMP_SYRINGE_DETECT_THRESHOLD_V )
     {
-        result = TRUE;
+        if ( 0 == syringePumpSyringeDetectDebounceStartTime )
+        {
+            syringePumpSyringeDetectDebounceStartTime = getMSTimerCount();
+        }
+        else if ( TRUE == didTimeout( syringePumpSyringeDetectDebounceStartTime, SYRINGE_PUMP_SYRINGE_DETECT_DEBOUNCE_TIME_MS ) )
+        {
+            result = FALSE;
+        }
     }
+    else
+    {
+        syringePumpSyringeDetectDebounceStartTime = 0;
+    }
 
     return result;
 }