Liver function tests, also known as liver enzyme tests, are blood tests that measure the levels of certain enzymes and proteins in the liver. These tests are often used to check for liver damage or disease, as well as to monitor the effectiveness of treatment for liver conditions. Here is everything you need to know about liver function tests:
1. When are liver function tests ordered?
Liver function tests may be ordered as part of a routine health checkup, or if a person is experiencing symptoms of liver disease such as jaundice (yellowing of the skin and eyes), abdominal pain, nausea, vomiting, or fatigue. These tests may also be ordered if a person has risk factors for liver disease, such as heavy alcohol consumption, obesity, diabetes, or a family history of liver disease.
2. What do liver function tests measure?
Liver function tests measure the levels of several enzymes and proteins that are produced by the liver. These include alanine aminotransferase (ALT), aspartate aminotransferase (AST), alkaline phosphatase (ALP), and bilirubin. Abnormal levels of these substances can indicate liver damage or disease.
3. What do abnormal test results mean?
Elevated levels of ALT and AST may indicate liver damage, such as hepatitis or cirrhosis. Elevated levels of ALP may indicate a blockage in the bile ducts, while elevated levels of bilirubin may indicate problems with the liver or gallbladder. Low levels of these substances may indicate liver disease or malnutrition.
4. How are liver function tests performed?
Liver function tests are simple blood tests that can be performed at a doctor’s office or a laboratory. A healthcare provider will draw a small sample of blood from a vein in the arm using a needle. The sample will then be sent to a laboratory for analysis.
5. Are liver function tests safe?
Liver function tests are safe and generally do not cause any complications. Some people may experience bruising, swelling, or mild pain at the site where the blood was drawn.
6. How to interpret the results?
It is important to discuss the results of liver function tests with a healthcare provider. Abnormal test results may suggest a variety of liver conditions, and further testing may be needed to determine the underlying cause. Treatment options will depend on the specific liver condition that is diagnosed.
In conclusion, liver function tests are important diagnostic tools that can help healthcare providers assess the health of the liver and monitor for liver disease. If you are experiencing symptoms of liver disease or have risk factors for liver disease, talk to your healthcare provider about getting liver function tests. Stay informed about your liver health and take steps to protect and support this vital organ.
