Hepatitis C virus (HCV) test is a blood test that looks for the genetic material (RNA) of the virus that causes hepatitis or for the proteins (antibodies) the body makes against HCV. These proteins will be present in your blood if you have a hepatitis C infection now or have had one in the past. It is important to identify the type of hepatitis virus causing the infection, to prevent its spread and choose the proper treatment.
HCV is spread through infected blood.
There is no vaccine available to prevent hepatitis C.
Hepatitis C virus testing is done to:
You do not need to do anything before you have this test.
Talk to your doctor about any concerns you have regarding the need for the test, its risks, how it will be done, or what the results will mean. To help you understand the importance of this test, fill out the medical test information form(What is a PDF document?).
The health professional taking a sample of your blood will:
The blood sample is taken from a vein in your arm. An elastic band is wrapped around your upper arm. It may feel tight. You may feel nothing at all from the needle, or you may feel a quick sting or pinch.
There is very little chance of a problem from having blood sample taken from a vein.
Results of hepatitis C virus testing that show no infection are called negative. This means that no antibodies against HCV or HCV genetic material was found. Results are usually available in 5 to 7 days.
No hepatitis C antibodies are found.
No hepatitis C genetic material (RNA) is found.
Hepatitis C antibodies are found. A test to detect HCV RNA is needed to determine whether the infection is current or occurred in the past. If HCV RNA is found, genotyping can determine which strain of HCV is causing the infection.
Hepatitis C RNA is detected. This result means a current hepatitis C virus infection.
Many conditions can change HCV antibody levels. Your doctor will talk with you about any abnormal results that may be related to your symptoms and past health.
Your results may need to be rechecked if you are taking some herbs, supplements, or other alternative medicine products.
Other Works Consulted
- Centers for Disease Control and Prevention (2003). Guidelines for laboratory testing and result reporting of antibody to hepatitis C virus. MMWR, 52(RR-03): 1–16. Available online: http://www.cdc.gov/mmwr/preview/mmwrhtml/rr5203a1.htm.
- Pagana KD, Pagana TJ (2010). Mosby’s Manual of Diagnostic and Laboratory Tests, 4th ed. St. Louis: Mosby.
- Scott JD, Gretch DR (2007). Molecular diagnostics of hepatitis C virus infection: A systematic review. JAMA, 297(7): 724–732.
|Primary Medical Reviewer||E. Gregory Thompson, MD - Internal Medicine|
|Specialist Medical Reviewer||W. Thomas London, MD - Hepatology|
|Last Revised||July 6, 2011|
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