amylase:creatinine clearanceratio

am·y·lase:cre·at·i·nine clear·ancera·tio

(am'i-lās-krē-at'i-nēn klēr'ăns rā'shē-ō)
A test for the diagnosis of acute pancreatitis; it is determined by measuring amylase and creatinine in serum and urine.