What should you know about anti-hepatitis C virus?

An anti-hepatitis C virus result shows whether your blood contains antibodies from exposure; it does not by itself confirm current infection. Antibodies can remain after an earlier infection has cleared, and a reactive result therefore needs interpretation alongside a test that looks for the virus itself.

Anti-hepatitis C virus is usually an antibody blood test. A non-reactive result means antibodies were not detected, although very recent exposure may need a clinician's assessment and repeat testing. A reactive result means the immune system has recognised hepatitis C at some point. It may represent a current infection, a past infection that is no longer active, or occasionally a result that needs confirmation.

A separate hepatitis C virus RNA test can help determine whether virus is currently detectable. Your clinician may also review liver tests, medicines, alcohol use, previous results and possible exposure history. Hepatitis C can be present without obvious symptoms; fatigue is one symptom that may occur, but it has many other possible causes.

Arrange a GP consultation or follow-up with the clinician who ordered the test. Ask whether an RNA test is needed and how your liver should be assessed. Do not assume that a reactive antibody result tells you when exposure happened or whether treatment is required. Until you have personalised advice, avoid sharing razors, toothbrushes or equipment that may contain blood, and cover open cuts.

If current infection is confirmed, a clinician can discuss treatment options and practical steps to protect your liver and reduce blood-to-blood transmission. Do not stop prescribed medicines or start supplements for the liver without checking first, because some products can affect the liver or interact with treatment.

Seek urgent medical help for yellowing of the skin or eyes with marked illness, new confusion or unusual sleepiness, vomiting blood, black stools, severe abdominal swelling, or severe persistent abdominal pain. These signs can indicate a serious liver or gastrointestinal problem and need prompt assessment, regardless of the antibody result.

For a test result without emergency symptoms, book follow-up rather than waiting for symptoms to appear. Take the laboratory report and a list of medicines, supplements and relevant previous tests to the appointment.

You could ask: Is my result reactive or non-reactive? Do I need hepatitis C RNA testing? Should I have a liver function test or other assessment? Could a recent exposure affect the result? Which medicines, supplements or activities should I review while this is being clarified?