amylase-creatinine clearance ratio

am·y·lase-·cre·at·i·nine clear·ance ra·ti·o

a test for the diagnosis of acute pancreatitis; it is determined by measuring amylase and creatinine in serum and urine; in apparently healthy individuals the renal clearance of amylase is less than 5% that of creatinine; in acute pancreatitis the ratio is said to be more than 5%.