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LFT - Liver Function Tests

Overview & Description

There are a number of ways to test liver function. Each test has its own name, as listed in the section below.

Who is a candidate for the test?

Liver function tests are ordered to see if the person's liver is healthy and functioning properly.

How is the test performed?

For the specific way in which each liver test is performed, refer to one of the following tests:

albumin, a protein synthesized by the liver

ALP, an enzyme found in the liver, bones and placenta

ALT, an enzyme found primarily in liver cells

AST, an enzyme found in the liver as well as many other body organs

serum bilirubin, a waste product formed by the breakdown of red blood cells

urine bilirubin

GGT, an enzyme present in the liver, pancreas and kidney

LDH, an enzyme found in the liver

PT or prothrombin time, which tests the blood's ability to clot

total cholesterol, a substance stored in the liver

total protein, a nutrient normally broken down by the liver and its enzymes

Preparation & Expectations

What is involved in preparation for the test?

Specific instructions should be requested from the healthcare provider.

Results and Values

What do the test results mean?

See the results given for each individual test of liver function.

Attribution

Author:David T. Moran, MD
Date Written:
Editor:Keefe, Sandy, RN, MSN
Edit Date:05/25/00
Reviewer:Sandy Keefe, RN, MSN
Date Reviewed:09/11/01

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