What is the liver panel test?
The liver panel test involves several tests that check how
well your liver is working. These tests are called liver
function tests. They are blood tests.
Several different enzymes (proteins) made by the liver are
measured in the blood:
- SGOT (serum glutamic oxaloacetic transaminase), also
called AST (aspartate aminotransferase)
- SGPT (serum glutamic pyruvic transaminase), also called
ALT (alanine aminotransferase)
- LDH (lactate dehydrogenase)
- ALP or AP (alkaline phosphatase, or "alk phos").
In addition to liver enzymes, bilirubin is also measured.
Bilirubin is a chemical released into the blood when red
blood cells break down. The liver uses bilirubin to make
bile.
Why is this test done?
This test is done to see how well your liver is working and
to check for liver disease.
How do I prepare for this test?
- Do not eat or drink anything after midnight and the
morning before your test. Tests that measure protein
levels in the blood are not as accurate if you have
eaten.
- You may need to avoid taking certain medicines before the
test because they might affect the test result. Make
sure your health care provider knows about any medicines,
herbs, or supplements that you are taking. Don't stop
any of your regular medicines without first consulting
with your health care provider.
- Talk to your health care provider if you have any
questions.
How is the test done?
A small amount of blood is taken from your arm with a
needle. The blood is collected in tubes and sent to a lab.
Having this test will take just a few minutes of your time.
There is no risk of getting AIDS, hepatitis, or any other
blood-borne disease from this test.
How will I get the test results?
Ask your heath care provider when and how you will get the
result of your test.
What do the test results mean?
The results of your liver function tests may not be normal
if:
- You are taking medicine that is causing liver problems.
- You have an infection that is affecting your liver.
- You have a blockage in the liver or gallbladder. For
example, gallstones might cause a blockage.
These tests for enzymes are most often done to look for
liver problems, but the enzymes are produced in other parts
of the body as well. For example, ALP is also made by the
bones. This means that sometimes abnormal results of this
test may be caused by conditions or diseases in parts of the
body other than the liver. You may need to have more blood
tests to find out which part of the body the extra enzyme is
coming from.
Results that are lower than normal are usually not a cause
for concern.
What if my test results are not normal?
Test results are only one part of a larger picture that
takes into account your medical history and current health.
Sometimes a test needs to be repeated to check the first
result. Talk to your health care provider about your result
and ask questions.
If your test results are not normal, ask your health care
provider:
- if you need additional tests
- what you can do to work toward normal values
- when you need to be tested again.


Disclaimer: This content is reviewed periodically and is subject to
change as new health information becomes available. The
information provided is intended to be informative and educational and is not a
replacement for professional medical evaluation, advice, diagnosis or
treatment by a healthcare professional.
HIA File TST5140F.HTM Release 9.0/2006. Copyright © 2006 McKesson Corporation and/or one of its subdiaries. All Rights Reserved.
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