You check your liver function by undergoing a liver function test, which involves a blood sample.
What Happens During a Liver Function Test?
A liver function test is a blood test that measures different substances in your blood to assess how well your liver is working. Here’s what generally happens:
- Blood Draw: A health care professional will draw a blood sample from a vein in your arm using a small needle.
- Collection: The blood is collected into a test tube or vial.
- Sensation: You may feel a little sting when the needle is inserted or removed.
Understanding the Results
The blood sample is sent to a lab for analysis. The test measures:
- Liver enzymes: Such as ALT and AST, which can indicate liver damage or inflammation.
- Bilirubin: A waste product that the liver processes. High levels can indicate liver problems or blockage of bile ducts.
- Albumin: A protein made by the liver, which helps in maintaining fluid balance and transporting substances in the body. Low levels might signal liver issues.
- Total protein: Overall protein levels, which can be affected by liver diseases.
Why Get a Liver Function Test?
Your doctor may order a liver function test to:
- Screen for Liver Disease: To look for early signs of liver problems, like hepatitis, cirrhosis, or fatty liver disease.
- Monitor Liver Conditions: If you already have a liver condition, this test helps to track its progress and how well treatment is working.
- Assess Medication Effects: Some medications can harm the liver. Liver function tests can monitor for any negative impact.
Summary of the Liver Function Test
| Step | Description |
|---|---|
| 1 | A health care professional draws a blood sample. |
| 2 | Blood is taken from a vein in your arm using a small needle. |
| 3 | The blood sample is sent for laboratory analysis. |
| 4 | The test will evaluate different substances in your blood like liver enzymes, bilirubin, albumin, and total protein. |
