Leucine aminopeptidase - urine

Leucine aminopeptidase is a type of protein called an enzyme. It is normally found in liver cells and cells of the small intestine. This test is used to measure how much of this protein appears in your urine.

Your blood can also be checked for this protein.

Cirrhosis of the liver

A chronic liver disease which causes damage to liver tissue, scarring of the liver (fibrosis; nodular regeneration), progressive decrease in liver function, excessive fluid in the abdomen (ascites), bleeding disorders (coagulopathy), increased pressure in the blood vessels (portal hypertension), and brain function disorders (hepatic encephalopathy). Excessive alcohol use is the leading cause of cirrhosis.

Leucine aminopeptidase urine test

Leucine aminopeptidase (LAP) is a proteolytic enzyme that breaks chemical bonds in proteins at specific sites next to leucine amino acids. Serum (blood) LAP is measured to diagnose liver (hepatic) dysfunction.

How the Test is Performed

How to Prepare for the Test

How the Test will Feel

Why the Test is Performed

Normal Results

What Abnormal Results Mean