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Doctor insights on: Mrsa Qualitative Rt Pcr

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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

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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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?

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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Tb blood tested negative but TB skin testd positive, what is that mean? Continuous low grade fever, swollenlumpnodes, sore thrt, HIV PCR RNA negative.

Tb blood tested negative but TB skin testd positive, what is that mean? Continuous low grade fever, swollenlumpnodes, sore thrt, HIV PCR RNA negative.

Contradictory Tb tst: Quantiferon-TB(the blood test) and the PPD(skin test) are not recommended together. The quantiferon test has more sensitivity/specificity(measures for how good medical tests are) but the gold standard is culturing the bacteria from either tissue or sputum which should be attempted if their is clinical suspicion for TB infection. ...Read more

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HIV NEGATIVE combo (antibody + antigen) tests at 4,6,10,13,14 weeks and PCR RNA VL UNDETECTED (14 weeks) white tongue, chronic pharyngitis. Am I HIV-?

HIV NEGATIVE combo (antibody + antigen) tests at 4,6,10,13,14 weeks and PCR RNA VL UNDETECTED (14 weeks) white tongue, chronic pharyngitis. Am I HIV-?

You are HIV negative: Listen, man. Stop doing this to yourself. Get to an otolaryngologist and see if you have a post-nasal drip, maybe heavy snoring without realizing it, or some actual serious illness. Try scraping the stuff off your tongue with a piece of dental floss; if it's still white patches, ask your dentist's opinion also. But please get over these HIV fears. Maybe even be thankful for having shared love. ...Read more

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Hiv ab,1/2, eia with relx result repeatedly reactive. HIV 1/2ab differentiation w/refl hiv1 antibody negative hiv2 antibody negative. pos or neg hiv?

Hiv ab,1/2, eia with relx result repeatedly reactive. HIV 1/2ab differentiation w/refl hiv1 antibody negative hiv2 antibody negative. pos or neg hiv?

It depends: In a situation like this you have one positive test and one negative test. The lab should run a tie-breaker test (HIV RNA) to give you a real answer. Also, the first test may be an older test 2nd or 3rd generation) instead of the latest 4th generation) test. It also depends on if you have flu-Like symptoms. Seek help from a specialist in HIV who can help you understand. ...Read more

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Plz interpret. ANA via ELISA 74 units, strong positive (negative via IFA) Anti-Cardiolipin IgG 22 CU, moderate positive others neg. symptom fatigue?

Plz interpret.  
ANA via ELISA 74 units, strong positive (negative via IFA)
Anti-Cardiolipin IgG 22 CU, moderate positive 
others neg.
symptom fatigue?

Short answer is : Needing more info on labs and clinical symptoms. ANA positive is sensitive for possible autoimmune disease.but not very specific. Every lab on your ENA panel is important esp they are moderate positive and they all mean something different. Lab is never enough for diagnosis esp rheumatic condition. It is important for you to find a rheumatologist for thorough history and physical exam. ...Read more

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Hiv RNA qualitative test negative; but absolute CD4 helper-879;% CD4 pos. Lymph-31.4;abs.Cd8 suppressor-1204;% cd8 pos lymph-43.0;cd4:cd8 ratio-0.73?

Hiv RNA qualitative test negative; but absolute CD4 helper-879;% CD4 pos. Lymph-31.4;abs.Cd8 suppressor-1204;% cd8 pos lymph-43.0;cd4:cd8 ratio-0.73?

I wouldn't worry: Cd4 normally runs around 500-1000. Cd8 usually runs 150-1000 or so, but these ranges are set so that several percent of healthies fall outside. I'm not worried; you can repeat the RNA if you mistrust the lab. In healthy folks, the values vary chaotically. I had burning mouth for weeks after coxsackie herpangina and a viral infection may have through your cells out of kilter briefly. ...Read more

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2 false pos ELISA HIV tests, all 1 1/2 years post exposure. Neg western blot, ifa, naat and 2 neg oraquick home tests. What is my HIV status? Help!

2 false pos ELISA HIV tests, all 1 1/2 years post exposure. Neg western blot, ifa, naat and 2 neg oraquick home tests. What is my HIV status? Help!

Likely negative: There is typically a "window" of 3-6 months after exposure where you could be HIV positive but test negative. Since you didn't get your testing until well after that, i'd say the confirmatory tests (western blot, ifa) are what you should go by. The elisa is very sensitive and can have false positives- that's why we rely on the confirmatory tests. I would consider your status to be negative. ...Read more

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Tested false positive ELISA HIV test last month. Negative ifa and western blot and naat. 2 negative oraquick all 1 1/2 year post exposure. Hiv?

Tested false positive ELISA HIV test last month. Negative ifa and western blot and naat. 2 negative oraquick all 1 1/2 year post exposure. Hiv?

Negative: If nat was negative at 6 months after exposure you not likely to have hiv. Given all the negative test results, you should not worry about the one apparently false positive. ...Read more

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False pos ELISA HIV tests, neg naat viral load test, neg western blot, ifa and oraquicks neg too. All 15 months post risk event. What should I do?

False pos ELISA HIV tests, neg naat viral load test, neg western blot, ifa and oraquicks neg too. All 15 months post risk event. What should I do?

Be grateful, man!: You've been obsessing about this too long. Sit down and talk with your physician about fears. If you'll forgive my frankness, talk with him/her and some wise adults (maybe even dad) about your emerging sexuality and how you've explored. By your age, we've all made mistakes. Embrace being a man, decide how you want love to be for you, and cherish adult love while resolving to be safe ; kind. ...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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HIV NEGATIVE combo (antibody + antigen) tests at 4,6,10,13,14 weeks and PCR RNA VL UNDETECTED (14 weeks) white tongue. Risk: gay deep kiss. Am I HIV-?

HIV NEGATIVE combo (antibody + antigen) tests at 4,6,10,13,14 weeks and PCR RNA VL UNDETECTED (14 weeks) white tongue. Risk: gay deep kiss. Am I HIV-?

You are HIV-neg: I hope this is good news. "White tongue" is usually bacteria, and you may be able to scrape them off with a piece of dental floss held tight. You can trust the test if it is your only exposure. I hope you're comfortable with your sexuality and that you're pleased to have shared a kiss -- guys of all orientations may enjoy perhaps kissing a buddy, and nobody's ever gotten HIV by kissing. ...Read more

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Please interpret- C.trachomatis RNA TMA Result: Detected. Standard range: Not detected. Test performed using the Aptima Combo2 (R) assay gen-probe(r)

Please interpret-
C.trachomatis RNA TMA Result: Detected. Standard range: Not detected. Test performed using the Aptima Combo2 (R) assay gen-probe(r)

You have chlamydia: "Detected" means the test found chlamydia -- i.e. a positive result. Return to the doctor or clinic where the test was done for treatment. (If you tested yourself at a lab, see a doctor or clinic ASAP.) Your current or recent sex partner(s) also need treatment. Good luck! ...Read more

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What can cause false positive ELISA HIV test? 2 confirmatories neg and viral load neg. No bands detected.

What can cause false positive ELISA HIV test? 2 confirmatories neg and viral load neg. No bands detected.

Many things: An elisa test for HIV is very sensitive which basically means it is a good test for ruling out HIV and is only reliable when negative. A positive elisa test does not mean someone has HIV and is frequently called a "false positive" there are many causes of a false positive which include liver disease, blood tranfusions, infections, autoimmune disease and dumb luck! ...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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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