How do you know if you have hepatitis C - is there a test?

An antibody screen test can determine whether you have been exposed to the hepatitis C virus.

A positive screen test means that you have hepatitis C antibodies in your blood. This does not always mean that you have hepatitis C.

A separate type of blood test known as "the PCR test" (Polymerase Chain Reaction) is used to detect the presence of the virus in the blood. If the PCR test is positive then you have hepatitis C.

Liver Biochemical/Function Tests

There are various blood tests used to assess how well your liver is working.

The most common measurements are alanine aminotransferase (ALT, formerly known as SGPT) and aspartate aminotransferase (AST, formerly known as SGOT).

ALT and AST are enzymes that are released into the blood when the liver is damaged.

They are often elevated in people with HCV Hepatitis C virus infection. Many people with HCV have mild to moderate elevations of these two enzymes, which are often the first indication that they are infected.

Other measurements include alkaline phosphatase (ALK) and gamma-glutamyl transpeptidase (GGT). Abnormal levels may indicate cirrhosis or bile duct blockage, as well as other abnormalities. In addition, your doctor may measure prothrombin time (an indication of blood clotting speed) and bilirubin levels. Bilirubin is a pigment that is often present in the blood of people with liver inflammation; high bilirubin levels result in jaundice.

Many factors such as use of medications and alcohol may cause abnormal lab results. Before drawing your own conclusions, check with a Doctor.