Doctor insights on:
False Positive Tb Test
Mycobacterium tuberculosis is an infectious organism that spreads by droplets coughed out by an infected person. Infection is established initially in lungs, but can spread within lungs & to other body parts, or can become latent, with reactivation occurring years to decades later. With effective treatment, it can be completely eliminated although drug resistant ...Read more
My 9-year-old cousin has had a terrible cough for several months. False positive on TB test, physician dismissed the issue. What else should we do?
If a person had TB as child and underwent treatment for it, could he have a false positive TB skin test as an adult?
Can DPT booster done at the same time affect TB test so that it is interpreted as false positive? In addition, TB test site bled right after injection
PPD: First- DTP injection does not affect the response to TB test second- TB test is placed intra dermally - which means no bleeding at injection site. ...Read more
Easy: What determines a false-positive test? Either not measuring induration, or that it was due to prior bcg, which seldom lasts more than 5 yrs. If someone has a negative PPD it means either that they do not have a focus of inactive tuberculosis or that they are anergic (incapable of reacting due to deficiency in immune mechanisms). ...Read more
Tb test site bled right after injection. Can this give a false positive?Obviously, it was not intradermal. Don't answer if you don't know how to.
Check with your doc: The test was not appropriately administered. You want to ask your doc for a new one. Or get the igra blood test which is better anyway. The skin test is almost in the museum of history of medicine. ...Read more
How accurate is this test :quantiferon-tb gold? And can they show up like false positive?I have test done and don't like the results i see .Scared
QFT Gold : Quantiferon gold can give false negetive or positive. Blood samples must be processed within 12 hours after collection while white blood cells are still viable. Test is not reliable among persons recently exposed to m. Tuberculosis, and in immunocompromised persons. False positive results can occur with m. Szulgai, m. Kansasii, and m.Marinum. ...Read moreSee 1 more doctor answer
9 wks preg. Tested positive for TB (blood test) doctor has not called. Could it be a false positive? Help I am so terrified. I have no symptoms.
Why was it done?: You may simply have been exposed and recovered, or this may be a false-positive. I'd relax. ...Read more
Is an infection in the body with mycobacterium tuberculosis. It is almost always acquired via the respiratory tract from which it can spread to other organs. After that, the immune system walls the bacteria off. All of this usually occurs without symptoms. After that, activation of the infection can occur in about 10% of the total patients. Half of this risk is in ...Read more
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