What should you know about hepatitis c blood test?

The test can be arranged because of a past exposure concern, changes in liver-related blood results, or as part of a health assessment. Many people with hepatitis C do not notice clear symptoms, so testing can be useful even when someone feels well.

An antibody result shows whether your immune system has encountered hepatitis C at some point. It does not, on its own, show that infection is active now. A positive antibody result is commonly followed by an RNA test, which looks for genetic material from the virus in the blood.

If RNA is detected, it supports a current hepatitis C infection and a clinician can discuss assessment and treatment. If antibodies are present but RNA is not detected, this can mean there is no current infection; your clinician will interpret this alongside the reason for testing and any recent exposure.

Keep a copy of the result and ask which test was performed, especially if you are told the antibody test is positive. If RNA testing has not already been completed, your clinician can arrange it or explain when it should be done.

When current infection is confirmed, the next appointment may include a review of medicines, other health conditions, and blood tests that help assess the liver. A liver function test measures substances made or processed by the liver; it adds useful context but cannot by itself diagnose hepatitis C.

Arrange a medical review promptly if you have had a possible blood exposure, such as shared injecting equipment, an unsterile procedure, or an injury involving another person's blood. Tell the clinician when the exposure happened, because timing can affect which test is most informative.

Seek urgent medical care for yellowing of the eyes or skin, confusion, vomiting blood, black stools, severe abdominal swelling, or severe abdominal pain. These symptoms need assessment whether or not hepatitis C is the cause.

Ask whether your result was an antibody test, an RNA test, or both; whether the timing of any possible exposure changes the plan; and whether liver blood tests are needed. If RNA is detected, ask how treatment is arranged, how to avoid blood-to-blood transmission, and whether anyone else needs testing.