What should you know about home liver function test?

Liver function panels usually measure substances in blood that reflect liver cell irritation, bile flow or the liver's ability to make proteins. A single result can be outside the usual range for many reasons, including recent illness, medicines, alcohol use or problems elsewhere in the body. Some liver conditions also cause no obvious symptoms at first.

Home kits vary in the markers they include and in how samples are collected. A result marked high or low is not the same as a diagnosis. A clinician may repeat the test, review your medicines and alcohol intake, examine you, or arrange additional tests. The [Liver Function Test](/treatments/diagnostics-and-screening/liver-function-test/) page explains the clinical test in more detail.

Check that the sample was collected, stored and posted exactly as directed. Keep the report, note any symptoms and list prescribed medicines, supplements and alcohol use before discussing the result with a clinician. Do not stop a prescribed medicine because of a home reading unless the prescriber tells you to.

Arrange follow-up for an abnormal result, especially if it remains abnormal or you have risk factors for liver disease. A clinician may consider conditions such as viral hepatitis or alcohol-related liver injury, but the home result alone cannot distinguish them.

Seek urgent medical help for yellowing of the skin or eyes with confusion, vomiting blood, black stools, severe right-upper-abdominal pain, marked drowsiness or rapidly worsening illness. Contact a clinician promptly for dark urine, pale stools, ongoing itching, swelling of the abdomen or unexplained weight loss.

Ask which markers were tested, whether the sample quality affects the result, what other explanations fit your history and whether repeat blood testing or imaging is needed. Tell the clinician about medicines, supplements and alcohol rather than trying to interpret the number alone.