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Doctor insights on: Hcv Riba Test

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Window for hcv ab test and hcv rna test?

Window for hcv ab test and hcv rna test?

HCV: Nowadays with polymerase chain reaction technology it is making "window" periods a less discussed issue. In my practice if I suspected a recent infection (say days to weeks old)..this test would show virons in your blood. Once this virus hits your bloodstream it explodes exponentially. Some people are fortunate that their bodies contain the infection..most do not. ...Read more

Dr. Camilla Graham
774 doctors shared insights

Hepatitis C (Definition)

An infection caused by the hepatitis C virus that attacks the liver and ...Read more


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Advia hep.C antibody +, HCV RNA -. 3 months later Architect hep C Ab -, HCV RNA -. 2 Hep C Ab Verification tests -.Is Advia hepC Ab test false positiv

Advia hep.C antibody +, HCV RNA -. 3 months later Architect hep C Ab -, HCV RNA -. 2 Hep C Ab Verification tests -.Is Advia hepC Ab test false positiv

Without more info: and only the data you submitted in your question, I would put it together the way you did: the first Advia hepC Ab test was a false positive. I presume other experts who arranged your follow-up testing have suggested the same interpretation. Stay well:) ...Read more

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Is hiv-1-pcr quantitative and HIV RNA PCR quantitative same tests?can DNA PCR test be quantitative?

Is hiv-1-pcr quantitative and HIV RNA PCR quantitative same tests?can DNA PCR test be quantitative?

HIV testing: Yes. Viral testing can be qualitative or quantitative. Most HIV RNA testing is quantitative. ...Read more

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Hepatitis c (HCV) antibody is reactive. The hepatitis C Recombinant Immunoblat Assay(riba) confirmation test is non reactive.Is antibody false positiv

Hepatitis c (HCV) antibody is reactive. The hepatitis C Recombinant Immunoblat Assay(riba) confirmation test is non reactive.Is antibody false positiv

Well : A positive hepatitis C antibody test with a negative or in a test usually is not a false positive that usually means someone had hepatitis C infection and their body cleared the infection and they are now immune to hepatitis C. Do a Healthtap visit or see a primary care physician for specific diagnosis ...Read more

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Advia hep. C antibody +,HCV RNA -. 3 months later Architect hep. C antibody -, HCV RNA -. 2 hep C Ab Verification tests-.Can above person donate blood?

Advia hep. C antibody +,HCV RNA -. 3 months later Architect hep. C antibody -, HCV RNA -. 2 hep C Ab Verification tests-.Can above person donate blood?

May be: You ought to disclose these results to the blood bank so that they may make a determination on your eligibility to donate along with other health factors. I commend you for considering doing your civic duty. ...Read more

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IMy HBV test results (red cross): Hepatitis B Surface Antigen: Nonreactive; Hepatitis B Core Antibodies: Reactive; HBV PCR: Negative. Do I have HBV?

IMy HBV test results (red cross): Hepatitis B Surface Antigen: Nonreactive; Hepatitis B Core Antibodies: Reactive; HBV PCR: Negative.  Do I have HBV?

Cured, but...: If a person's Hep B surface antigen is nonreactive, that means the lab does not find pieces of the surface of the virus. If her Hep B virus PCR is negative, that means the lab does not find the virus's DNA (genes). If the core antibody is reactive that means her immune system REMEMBERS being infected with Hep B. She is cured, but some viral DNA might be attached to her own human DNA in her liver. ...Read more

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What causes false positive HCV antibody test results?

What causes false positive HCV antibody test results?

Misinformed?: Who told you that your hep c test was false? If you have no viral load that means you cleared an infection. Are you sure you are getting the right advice? ...Read more

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Positive HIV screener test at blood donation... Negative IFA and Negative NAT... False positive?

Positive HIV screener test at blood donation... Negative IFA and Negative NAT... False positive?

Yes: The initial screening test for HIV is very sensitive, but not very specific. The back up screening tests are much more specific for HIV. ...Read more

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Is RNA PCR test for HIV accurate?

Is RNA PCR test for HIV accurate?

Yes: The nucleic acid test for HIV becomes positive about 20 days after exposure to the virus. ...Read more

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Test results: hepatitis Be Ab non-reactive Hepatitis Be Ag: negative Hepatitis Bs Ag: non reactive Quantitative HBV PCR : detected What it means?

Test results:
hepatitis Be Ab non-reactive
Hepatitis Be Ag: negative
Hepatitis Bs Ag: non reactive 
Quantitative HBV PCR : detected 
What it means?

See below: All laboratory results need to be interpreted in the clinical context and the doctor who ordered the tests is usually in the best position to do that. Having said that, from what you provided, you could have an early stage infection with hepatitis B. More than 80% of the people recover from the infection on their own. Discuss it with the doctor who ordered the test. ...Read more

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Dr. John Fung Dr. Fung
3 doctors agreed:
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Hep B Virus (HBV) DNA Qualitative (Detection) - COBAS TaqMan , Hep C RNA Detection by Taqman detection will be conclusive on 47 days? Any retest need?

Dr. John Fung Dr. Fung
3 doctors agreed:
Hep B Virus (HBV) DNA Qualitative (Detection) - COBAS TaqMan , Hep C RNA Detection by Taqman detection will be conclusive on 47 days? Any retest need?

No: Both Hepatitis B and C viruses may be detected 30 to 60 days after infection by antigen detection or 60-120 days with antibody testing. Direct HBV DNA and HCV RNA testing can potentially detect infection earlier, within 2-4 weeks after infection, so being tested at 47 days post-exposure with a negative nucleic acid test for both is very likely to be a true negative ...Read more

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Test result was "Hepatitis Surface Antibody - Nonreactive" and "Hepatitis B Surface Antigen - Reactive", "HBS AG Confirmation - Nonconfirm".

Hmmmm: Got me beat. A reactive Hep B antigen indicates that you have Hepatitis B. However, It looks like the test was NOT confirmed. My experience with labs is that their report format could use some improvement and you may be misreading this. Talk to the doc who ordered the test. ...Read more

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HBV test results: Hepatitis B Surface Antigen: Nonreactive; Hepatitis B Core Antibodies: Reactive; HBV PCR: Negative. Need any medication or vaccine?

HBV test results: Hepatitis B Surface Antigen: Nonreactive; Hepatitis B Core Antibodies: Reactive; HBV PCR: Negative.  Need any medication or vaccine?

Excellent question: and your story stumps many a doctor, often! :) a lot of the recommendations depend on - are you someone with risk factors for HBV? is this the first time that it has been checked? are your liver enzymes normal? are you about to undergo any procedures/ treatments that could put you at risk for HBV? If you have no sig risk factors, yes, I'd vaccinate you if there's potential for exposure. ...Read more

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05/05/2016 Siemens Advia Centaur hep C antibody result positive.08/10/2016 Abbott Architect (cmia) hep C antibody result negative.Who is telling truth?

05/05/2016 Siemens Advia Centaur hep C antibody result positive.08/10/2016 Abbott Architect (cmia) hep C antibody result negative.Who is telling truth?

It's not really: a question of truth telling. No test is perfect: the proteins and reactants used in each test will respond to an individual's blood/biologic material, potentially, in a different way. Falsely positive or falsely negative results are not very unusual. You need to decide on a confirmatory strategy with your doctor. Retesting is necessary and an expert can help you weigh the evidence to decide result ...Read more

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When is hepatitis b test conclusive with CMIA testing?

When is hepatitis b test conclusive with CMIA testing?

It's complex.: The CMIA test checks for hepatitis B surface antigen, just one of the items necessary to confirm and classify a hepatitis B infection. Without the other results, it's not possible to be sure. If you're concerned, bring your complete hep profile to your doctor, who can determine with a physical exam and your results if you're likely to have hepatitis B. Good luck. ...Read more