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Doctor insights on: Exposure Hcv Test Pcr

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Polymerase Chain Reaction (Definition)

Polymerase chain reaction is a method of finding a specific piece of dna and copying it over and over again until there is enough to study. The technique allows a scientist to detect very small amounts of dna in a swab sample then reproduce enough of it to study it. It is very sensisitive for detecting the presence of certain bacteria and is also used in doing other ...Read more


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How long after exposure to HCV does it take to test + with pcr?

How long after exposure to HCV does it take to test + with pcr?

A few days: No one knows for certain. If you shared needles, I know you will be wise enough not to do this again. If you had sex, remember it is difficult to transmit the infection this way. If you had some other kind of exposure, get tested but I would be surprised if it resulted in infection. ...Read more

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I had a risk then tested hep, a, b, c often after exposure through 1, 5 years, all were negative, 2 HCV quant PCR neg. But ultrasound showed fatty liver!

I had a risk then tested hep, a, b, c often after exposure through 1, 5 years, all were negative, 2 HCV quant PCR neg. But ultrasound showed fatty liver!

Yes: It will. You are to young for fatty liver, but it happens very often, up to 30-40% at older age. Since your tests were fine I would not worry about it. ...Read more

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Hep b, HCV ab and HCV PCR all negative 2 years post exposure but elevated gpt, got, GGT recently, I just want to keep ruling out viral hepatitis, could i?

Hep b, HCV ab and HCV PCR all negative 2 years post exposure but elevated gpt, got, GGT recently, I just want to keep ruling out viral hepatitis, could i?

Some ideas: Hopefully you've gotten immunized against hepatitis b, and hopefully you're not doing needle drugs to put you at risk for hepatitis c. You'd do well to have labs to look for hemochromatosis, wilson's, and autoimmune hepatitis. Many people have elevated liver enzymes that can be lowered just be getting more physically active. Glad you don't drink. Best wishes. ...Read more

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(-)4th gen hiv 1.5, 2.3.4.5.5.5 mnth, DNA PCR 10, 12 wk, RNA PCR 18 wk, vdrl, hsv, hcv, chlmydia 11, 16 wk. R these 100% conclusive after risky exposure?

(-)4th gen hiv 1.5, 2.3.4.5.5.5 mnth, DNA PCR 10, 12 wk, RNA PCR 18 wk, vdrl, hsv, hcv, chlmydia 11, 16 wk. R these 100% conclusive after risky exposure?

Stop testing!: You have been seriously overtested, especially for HIV. The 4th gen HIV tests are conclusive any time 4 weeks or more after exposure. All HIV tests after the one at 1.5 months were superfluous and a waste of money and time. The other tests also are conclusive and also didn't need to be done a second time. No matter how high the risk might have been, you can move on without worry. ...Read more

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I have reactive anti body hcv but negative pcr, what can I do to pass my GAMCA medical test? I had applied for the saudi arabia

I have reactive anti body hcv but negative pcr, what can I do to pass my GAMCA medical test? I had applied for the saudi arabia

Should be fine: Antibodies to HCV can be a false positive, indicate prior resolved infection or active infection. However a negative PCR means that you do not harbor an active infection. As long as it remains negative and your liver function tests are normal, you should be able to pass your medical exam. ...Read more

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I have negative HCV rna (pcr), so how accurate is the test?

I have negative HCV rna (pcr), so how accurate is the test?

Accurate: Negative hcv RNA qualitative test means no circulating hep c virus. If the antibody test for hep c is also negative, it would mean no exposure to hep c. ...Read more

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What is the purpose of this test? Hcv RNA by PCR quantitative and what does this test show?

What is the purpose of this test? Hcv RNA by PCR quantitative and what does this test show?

Checking hepatitis C: This test will confirm whether a preliminary screening test for hepatitis c (anti-hcv ab) is a true positive or not. Also, the level of the test has some predictive value in terms of whether or not one would respond to hep c therapy or not. ...Read more

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What is the possibility of having a positive HCV ab screen but a negative HCV RNA PCR test?

What is the possibility of having a positive HCV ab screen but a negative HCV RNA PCR test?

10%: Around 10% of patients with hcv + will have negative PCR viral load. This means either a false positive (confirmed with negative riba) or cleared previous infection. ...Read more

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Does a weak or moderate hemolysis (of blood serum) have any effect on qualtative HCV rt-pcr test?

HCV test: Hemolysis should not affect the hcv pcr test. You should still get an accurate viral load count. Of course it will affect the rbc, mcv, hmc, and other labs concerning the red blood cells. ...Read more

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HCVantibody screen is reactive with a low signal to cutoff ratio.2 con. HCV RNA PCR tests 2 months apart are not detected or negative. Does one has hepC

No: PCR test is more reliable. For good health - Have a diet rich in fresh vegetables, fruits, whole grains, milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form. Drink enough water daily so that your urine is mostly colorless. Practice safe sex. ...Read more

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I Had a blood test & everything negative except the hep c ab w/refl to hcv rna, qn, pcr signal to cutoff the result is <1.00 what does that mean?

I Had a blood test & everything negative except the hep c ab w/refl to hcv rna, qn, pcr signal to cutoff the result is <1.00 what does that mean?

This is a very: Convoluted way of saying "this is a negative test." First the antibody that fights off hep C was checked. Because it may take up to 3 months for the antibody to show up, a second test, the HCV RNA, was checked automatically (i.e., reflexively or w/refl). The cut off value of <1.00 means that the virus itself could be NOT be detected either. Hope this helps! Dr. Anne ...Read more

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Does hcv coinfection expand only window period for antibody tests of hiv? Or does it have any affection to window period or accuracy of hiv pcr test?

Does hcv coinfection expand only window period for antibody tests of hiv? Or does it have any affection to window period or accuracy of hiv pcr test?

Worse outcome: Coinfection with Hep C and HIV is worse than either infection alone. Window period is a minor issue compared to severity of disease. Window period can be addressed by nucleic acid tests rather than relying in antibodies. ...Read more

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Hep c anti body 14 with cutoff of 1, but qualitative HCV RNA PCR says no RNA material detected. In notes says single test not enough. My alt, cbc, ok

Probably cleared: The hcv viral load tests are not fda approved to confirm active infection, although this is how most doctors use it. If a repeat viral load in around 4 months is also negative, people are considered to have spontaneously cleared infection. ...Read more

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My weight is 154kg. Age 30.Height 6 feet. I have enlarged live and spleen. In my blood screening test HCV is +.But PCR RNA of hepatits c viral is negtive?

My weight is 154kg. Age 30.Height 6 feet. I have enlarged live and spleen. In my blood screening test HCV is +.But PCR RNA of hepatits c viral is negtive?

Maybe false positive: Or the lab could have switched your blood with someone else's blood. You may want to go to reputable lab like quest or bioreference, but not labcorp and have it rechecked. ...Read more

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How many days after infection with HCV to be detected with pcr?

The RT-PCR for HCV: Can be positive within days, 7-10 or so, after exposure, in comparison to to 70-90 days or so to develop acute disease symptoms. Many cases of acute hcv are silent. ...Read more

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Hi, I'm hcv+ genotype3, RNA pcr (quantitative) is 1730256 iu/ml, is it alarming should I start medicine, my last 2 months lft's r normal please advise. Thnx.

Hi, I'm hcv+ genotype3, RNA pcr (quantitative) is 1730256 iu/ml, is it alarming should I start medicine, my last 2 months lft's r normal please advise. Thnx.

HCV+: Hcv+ genotype3, RNA pcr of 1730256 iu/ml refers to your viral load or how much of the hepatitis virus you're carrying in your blood. Your number is toward the high end of the range. You have normal lft's though. It's more alarming that you're hep c positive and are still having unprotected sex, unless your partner is already infected. An infectious disease doctor can assist with your hep c? '. ...Read more

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What tis means HCV by PCR. Result = not detected? Does patient has hepatitis C or not?

Depends.: Hepatits c virus (hcv) is diagnosed with an antibody against hcv (anti hcv ab) and not by pcr. Some number of patients are able to clear initial hcv infection: they will have positive hcv ab and persistently not detected hcv pcr. Hcv pcr tells you what the burden of hcv is in the blood stream as it detects hcv rna. ...Read more

Pcr (Definition)

Polymerase chain reaction is used in molecular biology to amplify copies of dna. It is used in dna cloning for sequencing, functional analysis of genes, identification of genetic finger prints, diagnosis of hereditary ...Read more


Dr. Camilla Graham
764 Doctors shared insights

Hepatitis C (Definition)

An infection caused by a virus that attacks the liver ...Read more