Hepatitis C Antibody Blood Test in California

What this test measures

When the body encounters the hepatitis C virus, the immune system produces antibodies that can be detected in blood. These antibodies indicate exposure, but they do not by themselves show whether the infection cleared or remains active. That is why antibody testing is often paired with an RNA test that looks for the virus directly.

The sample is serum from a routine blood draw. The laboratory reports the anti-HCV result, and reflex testing may automatically add HCV RNA when the antibody screen is reactive. Other markers such as ALT, AST, bilirubin, and albumin can provide context about liver function.

People order this test after possible exposure, as part of routine screening, or when liver-related symptoms need evaluation. Because hepatitis C can be present without symptoms for years, testing is an important part of a complete health review, and a qualified healthcare provider should interpret the findings.