Anti-HCV blood test: what the result means

The test is usually taken from a vein. It checks the immune response rather than detecting the virus itself, so it cannot by itself confirm an active infection or show how the liver is functioning.

A non-reactive result means hepatitis C antibodies were not detected. If the possible exposure was recent, antibodies may not yet be detectable, and a clinician may recommend an HCV RNA test or repeat antibody testing later.

A reactive result means antibodies were found. This may reflect a current infection, a past infection that has cleared, or occasionally a false-reactive screen. Antibodies can remain after the virus is gone, which is why confirmatory testing matters.

Review the result with the clinician who ordered it, including when a possible exposure occurred and whether an RNA result is already available. A reactive antibody result should not be interpreted as an active infection without the RNA result.

If HCV RNA is detected, the clinician may arrange liver blood tests, review medicines and supplements, and discuss antiviral treatment. Until the result is clarified, avoid sharing razors, toothbrushes, or needles that could carry blood, and cover any bleeding cuts. Hepatitis C is not spread by ordinary contact such as hugging or sharing food.

Arrange prompt medical assessment if you develop yellow skin or eyes, dark urine, pale stools, persistent vomiting, increasing abdominal swelling, or marked drowsiness. Seek emergency care for confusion, vomiting blood, black stools, fainting, or severe weakness, as these can signal serious liver-related complications or bleeding.

Ask whether the laboratory automatically performs HCV RNA testing after a reactive screen, whether the timing of your possible exposure changes the interpretation, and whether you need liver tests or testing for other blood-borne infections. Also ask how and when you will receive the confirmatory result.