Most of the times,the test results for Hepatitis C is definitive but in some rare cases, false positive results occur even when the person is not affected by the virus.
The contrary may also be true in which case, the test may be false negative even when the person is affected.
One needs to have a clear understanding of the subject should such a case occurs.
There are two main types of tests oh Hepatitis C.
Initial test is called ELISA, which is an enzyme-linked immunosorbant assay.
It looks for hep C antibodies.
The other one is a hep C RNA test, which detects the actual presence of virus in the bloodstream.
If one tests positive in ELISA, RNA test is conducted only to confirm the presence of infection as it is a very expensive test.