Which test is described as the Hepatitis C test?

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Multiple Choice

Which test is described as the Hepatitis C test?

The test concept being checked is how Hepatitis C is diagnosed through serology and molecular testing. RIBA, the recombinant immunoblot assay, was historically used as a confirmatory test for Hepatitis C antibodies after an initial screening test. It works by detecting antibodies against multiple HCV antigens, giving a more specific result than the screening test alone. This is why it’s described as the Hepatitis C test in some older workflows—the confirmatory step that verifies exposure to the virus. ELISA is the common screening test that looks for anti-HCV antibodies, but on its own it can yield false positives, so a second, more specific test like RIBA was used to confirm true infection. PCR, on the other hand, detects the presence of viral RNA, showing active infection rather than just exposure, so it serves a different purpose in the diagnostic process. FTA is unrelated here, as it is a test for syphilis. So, the test described as the Hepatitis C test in this context is the immunoblot confirmation test for anti-HCV antibodies. In current practice, many labs use PCR to detect HCV RNA to confirm active infection, but historically RIBA served as the confirmatory antibody test.

The test concept being checked is how Hepatitis C is diagnosed through serology and molecular testing. RIBA, the recombinant immunoblot assay, was historically used as a confirmatory test for Hepatitis C antibodies after an initial screening test. It works by detecting antibodies against multiple HCV antigens, giving a more specific result than the screening test alone. This is why it’s described as the Hepatitis C test in some older workflows—the confirmatory step that verifies exposure to the virus.

ELISA is the common screening test that looks for anti-HCV antibodies, but on its own it can yield false positives, so a second, more specific test like RIBA was used to confirm true infection. PCR, on the other hand, detects the presence of viral RNA, showing active infection rather than just exposure, so it serves a different purpose in the diagnostic process. FTA is unrelated here, as it is a test for syphilis.

So, the test described as the Hepatitis C test in this context is the immunoblot confirmation test for anti-HCV antibodies. In current practice, many labs use PCR to detect HCV RNA to confirm active infection, but historically RIBA served as the confirmatory antibody test.

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