Hello doctors. My Nil tube is .12 IU/ml TB antigen is 5.2 IU/ml IGRA Result is Positive. Do I Uterus TB?

Dr. Sajeev KumarGeneral Physician33yrs exp

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It is used to assure the patient has a healthy immune status and also serves as a control for correct blood handling and incubation. It is used to detect false-negative readings. In order for a test to be valid, the mitogen tube must have a gamma interferon value ?0.5 IU/mL higher than the value of the Nil tube. The quantiferon assay does not differentiate between recently acquired or old infection, or between a latent TB infection and active tuberculosis. For a test to be considered positive, the TB antigen tube value minus the NIL tube must be equal to or greater than 0.35 IU/ml.  

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