I am 23 years old I have done below test please explain is it T. B. Or what I have mantoux test sputum test both are negative and esr blood sugar all are normal but in chest x ray. According to report opacity in left upper zone. Impression Ct scan report Consolidation with air bronchogram in left upper lobe as described above. Centrilobular nodules in left upper lobe as described above. F/S/O Infective etiology likely Tubercular.

Dr. Naresh Kumar MonigariGeneral Physician6yrs exp

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Hello, mantoux test is not worth doing now. Sputum for afb may not be positive always, for sputum test to be positive there should be at least 10 to the power 4 organisms to get detected. So we need to go along with ct scan. If you are from metropolitan city you can try to get gene expert test on sputum which is more sensitive than microscopy and gives result in 2 hrs. Other is sputum culture and sputum culture for tuberculosis. Sputum for gram stain we need to give antibiotics and see for response. 

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