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Doctor insights on: Nasal Swab Test

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Dr. Jack Mutnick
1,167 doctors shared insights

Nasal (Definition)

NaSal is a nasal preparation which is a kind of ...Read more


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Can swab test culture test done to check for strep throat be false -ve?

Can swab test culture test done to check for strep throat be false -ve?

Strep throat: A rapid strep test could be false negative. A culture, if the specimen is obtained properly, should not have a false neg. ...Read more

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Would a NAAT swab test show positive for chlamydia 3 days post possible exposure?

Would a NAAT swab test show positive for chlamydia 3 days post possible exposure?

A bit too early: The exact time for reliable chlamydia testing by NAAT isn't certain, but 3 days probably is a bit early. A negative result would be somewhat reassuring, but probably not conclusive. It would be safer to wait until 5 days or so, unless there is some urgency (e.g. if you have abdominal pain or other symptoms of a complication like PID). ...Read more

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Is the flu test a blood test or mouth swab?

Is the flu test a blood test or mouth swab?

Flu test: Rapid tests for influenza involve taking a swab of the nose. More definite diagnosis involves 2 blood tests - one during the acute illness and another 2 to 4 weeks after it. ...Read more

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Docs, could a throat swab used to test for strep find mono inadvertently?

Docs, could a throat swab used to test for strep find mono inadvertently?

Doubtful: The strep swab is a targeted test for a specific problem. The materials used and outcome is more is strep present or not. To find mono, the blood is taken and tested. ...Read more

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Is the Oraquick gum swab, at home rapid test, for HIV reliable/accurate?

Is the Oraquick gum swab, at home rapid test, for HIV reliable/accurate?

Very accurate: This text is extremely accurate. However, of all available HIV antibody test, it takes the longest to be conclusive, 3 months after the last possible HIV exposure. All other tests are done on blood and are conclusive after 4-8 weeks. ...Read more

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How soon will an NAAT swab test pick up chlamydia?

How soon will an NAAT swab test pick up chlamydia?

Chlamydia test: Maybe as soon as 2-3 days, but for sure after about 5 days. See my reply to your other question. ...Read more

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Can a Barium xray detect LPR and post nasal drip?

Can  a Barium xray detect LPR and post nasal drip?

No: Barium x-rays may show some LPR but not post nasal drip. The best tests for LPR are esophageal acid probe/mannometry and/or nasopharyngoscopy to visualize the vocal cords and look for sings of acid irritation. ...Read more

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Can a urine culture detect stis?

Can a urine culture detect stis?

Some: Gonorrhea may be seen in urine culture. Chlamydia and gonorrhea can also be tested by nucleic acid tests on urine. ...Read more

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Docs, could a blood test or urine test detect chlamydia?

Docs, could a blood test or urine test detect chlamydia?

Testing: Chlamydia tests include a culture that may take 5 to 7 days to grow. A direct fluorescent antibody test looks for antigens. A nucleic acid hybridization test or a nucleic acid amplification test looks for chlamydia dna &enzyme –linked immunosorbent assay. Directing sampling uses fluids from cervix, urethra throat, eye (whichever area is impacted). Urine testing is also possible. ...Read more

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Will a strep b vaginal swab show up any STDs ?

Will a strep b vaginal swab show up any STDs ?

STDs: No, vaginal swabs for group b strep will not reveal stds. Would need far more info to try and answer your question in further detail. My suggestion is that if you feel you were exposed to an std go and see a doctor, be examined and tested thoroughly. Good luck. ...Read more

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Swollen turbinates for last 6 months. Dx vasomotor Rhinitis. Positive nasal swab for Coag Negative staph. Could this be cause of Vasomotor Rhinitis?

Swollen turbinates for last 6 months. Dx vasomotor Rhinitis. Positive nasal swab for Coag Negative staph. Could this be cause of Vasomotor Rhinitis?

Definitely not: A culture like that is essentially useless. Staph CN organisms in this setting are 'just along for the ride' and have nothing to do with your sinus disease. That might have been different if a true pathogen was found (like Strep) but I'm pretty sure this is just what we call 'normal flora'. The sinuses are not a sterile place, so there are ordinary bacteria there. I would seek more about ALLERGY. ...Read more

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I'm wondering can the urine dipstick test detect gonorrhea and chlamydia?

I'm wondering can the urine dipstick test detect gonorrhea and chlamydia?

Which one ?: There are several dipstick tests. The common ones only look for stray materials that can show up in the urine is various concentrations.The regular dipstick test does not look for STD's. There are special tests that can be done on urine that are not as sensitive as others in detecting them, but might. ...Read more

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If u pass a urine drug test can u still fail a saliva mouth swab drug test?

If u pass a urine drug test can u still fail a saliva mouth swab drug test?

Yes: Bio markers remain in the oral cavity longer than urine in your system.You can use someone else's urine but not their mouth. ...Read more

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Could lidocaine test positive for cocaine in a urine test?

Could lidocaine test positive for cocaine in a urine test?

No: Neither on screening tests or confirmatory tests. They are totally different chemicals that are unrelated, and tests do not confuse the two. ...Read more

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Is a high swab vaginal herpes DNA test result reliable? (Without leison) Do I need another blood test to reconfirm?

Is a high swab vaginal herpes DNA test result reliable? (Without leison) Do I need another blood test to reconfirm?

Not reliable: Any single swab test for HSV only shows the virus was not present at that moment. Even in people with proved genital HSV2 infection, virus typically is detectable less than 20% of the time; for HSV1 it's under 1% of the time. So this test doesn't show whether or not you have genital herpes. A blood test can help: if positive for HSV2, you have genital herpes, regardless of swab test results. ...Read more

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Does a urine test detect less drug in system then mouth swab?

Does a urine test detect less drug in system then mouth swab?

Drug Test: This depends on the drug being tested for and the time elapsed since the last dose was taken. ...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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Had nasal swab done bc of stuffiness and sinus headaches. tested positive for strep a. Do I need antibiotics? Does this mean I'm a carrier?

Had nasal swab done bc of stuffiness and sinus headaches. tested positive  for strep a. Do I need antibiotics? Does this mean I'm a carrier?

Fever? Other Symps?: A nasal swab only detects the presence of Strep bacteria (in this case, from the "A group" - Group A Strep or GAS). It does NOT determine infection. Symptoms do that. Are you having fever? Sore throat? Enlarged glands? These are signs of an infection. TTYD or use HealthTap Prime to determine if you need antibiotics. If you're just a carrier, avoid sick contacts but antibiotics won't help you. ...Read more