Percent change in fluorescence of the macrosensors in response to glucose after at least 1 hour. The macrosensors contained either the polymer PVC-COOH (ncontrol = 7 and nglucose = 6 ), PVC (ncontrol = 7 and nglucose = 8), P(VDC/AN) (ncontrol = 9 and nglucose = 9), PCL (ncontrol = 6 and nglucose = 6), PUR (ncontrol = 7 and nglucose = 8), or PMMA(COOH)2 (ncontrol = 6 and nglucose = 6).