What is liver function test?

Liver function tests are blood tests used to help diagnose and monitor liver disease or damage. These tests also measure the levels of certain enzymes and proteins in your blood. Some of these tests measure how well the liver is performing its normal functions of producing protein and clearing bilirubin, a blood waste product. Other liver function tests measure enzymes that liver cells release in response to damage or disease. Abnormal liver function test results don't always indicate liver disease. Your doctor will explain your results and what they mean.

What the liver test is used for?

Liver function tests can be used to:

• Screen for liver infections, such as hepatitis
• Monitor the progression of a disease, such as viral or alcoholic hepatitis, and determine how well a treatment is working
• Assessed the severity of a disease, particularly scarring of the liver (cirrhosis)
• Observe possible side effects of medications

How is the procedure performed?

Your doctor will give you complete instructions on how to prepare for the blood sample portion of the test. Certain medications and foods may affect levels of these enzymes and proteins in your blood thus you may be asked to avoid some types of medications, or they may ask you to avoid eating anything for a period of time before the test. Be sure to continue drinking water prior to the test. You may want to wear a shirt with sleeves that can easily be rolled up to make it easier to collect the blood sample.

What will be the results interprets?

Normal results vary from laboratory to laboratory and might be slightly different for women and children. Your doctor will use these results to help diagnose your condition or determine treatment you might need. If you already have liver disease, liver function tests can help determine how your disease is progressing and if you're responding to treatment