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Doctor insights on: Stool Swabs Pcr Shows A Virus

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Can a quantitative HIV DNA test that looks for the virus differentiate HIV 1 from HIV 2 ?

Can a quantitative HIV DNA test that looks for the virus differentiate HIV 1 from HIV 2 ?

No: This is determined predominantly by antibody testing rather than by PCR for HIV RNA (This is an RNA virus). The latter test does not differentiate serotypes. Type 2 is very rare outside of Africa and seems more difficult to transmit. There are also numerous subtypes of both Types 1 & 2 and this becomes quite complex since this virus mutates continuously. ...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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Can a urine culture detect herpes virus?

Can a urine culture detect herpes virus?

Herpes: No. Herpes can be detected by an actual smear from the ulcer or blood test. ...Read more

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Diagnosing Blood in Stool (Checklist)

Get a heme test of stool
daily
Make dietary changes
3x day
Take a stool softener
3x day
See your doctor
once
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Will a stool culture detect h.pylori?

Will a stool culture detect h.pylori?

Stool antigen: Three methods can be used to diagnose H pylori infection: 1. Upper GI tract biopsy, histologic exam, rapid urease testing, culture 2. Urea breath test employing 14C or 13C-urea 3. Stool antigen detection. So not a stool culture per say, but looking for the presence of H. Pylori antigen in the stool. ...Read more

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Does ureaplasma urealyticum infection show up on a urine culture or a pcr std urine test? I had two urine cultures and three std urine tests.

Does ureaplasma urealyticum infection show up on a urine culture or a pcr std urine test? I had two urine cultures and three std urine tests.

Normal bacteria: It's normal to have U. urealyticum in the genital tract. Once in a while it causes nongonococcal urethritis (NGU) in men, but generally harmless both in men and their sex partners. UU doesn't show up on routine tests; testing is rarely needed except in special circumstances. So nothing to worry about, especially if no symptoms. If in doubt, see an STD or infectious diseases expert. Good luck! ...Read more

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Is a negative HIV ELISA (eia) test, and dna/pcr test at 5 months conclusive? ...Even if symptoms persist, leaky gut, enteritis, white tongue, etc...

Is a negative HIV ELISA (eia) test, and dna/pcr test at 5 months conclusive? ...Even if symptoms persist, leaky gut, enteritis, white tongue, etc...

You're fine: Please forgive my frankness. You already know from your reading on the internet that your nucleic acid test is proof that you're not infected. And you say you haven't had unprotected sex. Your are doing yourself a disservice by reading internet junk. "leaky gut" is scientifically discredited. Lots of folks have white junk on their tongue -- tried dental flossing it off? Read about somatization. ...Read more

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Would a Pap smear, coloscopy, and biopsy of cervix cells detect a herpes infection?

Not necessarily: There is a blood test for herpes and if you wish to know if you have been infected with Herpes 1 and or 2, ask your doctor for the blood test. For good health- Have a diet rich in fresh vegetables, fruits, whole grains, low fat 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. Practice safe sex. Get HPV vaccine. ...Read more

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Can a simple urine analysis, urine culture or semen analysis report detects HIV infections/bacteria or stds?

Can a simple urine analysis, urine culture or semen analysis report detects HIV infections/bacteria or stds?

Std: All std diseases including hiv, can be easily diagnosed by blood test or a urethral swab. Urine or semen analysis are not recommended to screen for std's. ...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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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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Can lgv be detected by chamydia cerival smear and by urine test? Is a serum lgv L2 IgG IgA IgM accurate at 8 weeks? All stds were neg still symptoms

Can lgv be detected by chamydia cerival smear and by urine test? Is a serum lgv L2 IgG IgA IgM accurate at 8 weeks? All stds were neg still symptoms

Extremely rare STD: LGV (lymphogranuloma venereum) is very rare, and in recent years in the US almost entirely in gay men. Few no cases have been reported in women the last 10-20 years. The types of chlamydia that cause it would probably be detected by standard testing, but special testing would have to be done to know it was an LGV strain. However, a negative LGV blood test proves you don't have it. ...Read more

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My brother had a positive ELISA test for HIV followed by an indeterminate western blot. His viral load detected no virus. How confident should I be?

My brother had a positive ELISA test for HIV followed by an indeterminate western blot. His viral load detected no virus.  How confident should I be?

Pretty confident: It sounds like's he's negative and just happens to have an indeterminate wb. This happens sometimes, for reasons that are never entirely explained. However, i would recommend that he get the elisa and western blot retested one month after the first. If there has been no progression of the WB (addition of new bands), then he's definitely negative. ...Read more

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Can LGV Chlamydia be detected by the Quest lab antibody test that checks for L2 igM igA igG for C. Trachamatis. Is this accur. For LGV at 5 months. ?

Can LGV Chlamydia  be detected by the Quest lab antibody  test that checks for L2 igM igA igG for C. Trachamatis. Is this accur. For LGV at 5 months. ?

Accurate, but why?: Lymphogranuloma venereum (LGV) is caused primarily by a particular type of chlamydia, called L2. The Quest test is very accurate; a negative result 5 months after exposure or possible symptoms is strong evidence against LGV. But why be tested? Symptoms? Partner w/ possible LGV? In the US, LGV occurs almost entirely in gay men; there have been few or no cases in women for the past half century. ...Read more

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Can you have a negative hep c antibody screen blood test but a positive viral load test?

Can you have a negative hep c antibody screen blood test but a positive viral load test?

Possible: It is possible, though not common, to have the results you described. It would be prudent to consult an infectious disease specialist as hepatitis C is now curable in most cases. ...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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Took a hiv rna and a rapid hiv antibodies test at 6 weeks from exposure came back negative. Is it conclusive?

Took a hiv rna and a rapid hiv antibodies test at 6 weeks from exposure came back negative. Is it conclusive?

Nearly so: A negative result for HIV RNA at three months is conclusive. At 6 weeks it is nearly so. It would be prudent to repeat the HIV RNA/nucleic acid test in 6 weeks to make sure. See this site for info on this topic. http://www.cdc.gov/hiv/basics/testing.html ...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


Virus (Definition)

A virus is a small infectious agent that can replicate only inside the living cells of an organism. Viruses can infect all types of organisms, from animals and plants ...Read more