Specimen: Collect 1 mL Whole blood each in a set of special QuantiFERON-TB Gold tubes available from Medilab. Shake the tubes vigorously at least 10 times to ensure thorough mixing. DO NOTCENTRIFUGE. Ship at room temperature to reach lab within 16 hours OR Incubate the tubes immediately at 37°C for 16-24 hours and centrifuge. Ship refrigerated OR 4 mL (3 mL min.) Whole blood from 1 Green top (Sodium/Lithium heparin) tube. Ship refrigerated. DO NOT FREEZE.
Stability (Room): 16 hrs
Stability (Refrigerated): 72 hrs
Stability (Frozen): N/A
Price: Contact Medilab
Turnaround time (TAT): 10 – 15 days
Usage: Latent tuberculosis infection (LTBI) is a non-communicable asymptomatic condition that persists for many years and may progress to tuberculous disease. The main aim of diagnosing LTBI is to consider medical treatment for preventing the disease. This test is a measure of cell mediated immune response to antigens simulating the mycobacterial proteins. A positive result indicates that mycobacterium tuberculosis infection is likely but further medical & diagnostic evaluation is necessary. This test is usually negative in individuals vaccinated with Mycobacterium bovis BCG.
Home Collection: Available
Pre-test Information: No special preparation required