Quantiferon test is a blood test for the detection of Mycobacterium tuberculosis. They work by detection of interferon-y. The test is a cell-mediated immune response to peptide antigens that resemble mycobacterial protein. The result can be obtained in 24 hours.
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Does my test suggest active TB infection?
Query: Hi doctor, During fitness examination I got know that I have bilateral apical pleural thickening in the chest x-ray, but neither in the past or current, I have any health complaints. So, the further investigation I did was PPD skin test and QuantiFERON TB gold test, which is positive 20 mm and 3.42 ... Read Full »
Answer: Hi, Welcome to icliniq.com. I have gone through your case, and I am of the following opinion. Your blood test and skin test are surely positive and are indicative of active tuberculosis. Your x-ray shows minimal pleural thickening, which shows past lesions. Now the issue is that you might have... Read Full »
Does Doxycycline affect the accuracy of sputum report?
Query: Hi doctor,I am a 45-year-old female. I am getting on and off cough. I have lost 11.02 Ibs in the last two years. My CT shows atypical changes and the QuantiFERON TB test shows positive with a reading of 0.38. I am waiting to get my sputum test result. I am currently on Doxycycline 100 mg per day and... Read Full »
Answer: Hi, Welcome to icliniq.com. As per your symptoms, pulmonary tuberculosis has to be ruled out. Weight loss of 11.02 Ibs in two years is not significant. But, on and off cough with breathlessness is significant. QuantiFERON TB is not a diagnosis of active TB, It shows latent TB. Your CT findings (at... Read Full »
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