Which test is used to diagnose Tuberculosis in the human body?

Correct option is B

Sol. The Mantoux test (Tuberculin Skin Test) is used to diagnose Tuberculosis (TB). A small amount of tuberculin is injected into the skin, and if swelling occurs at the injection site within 48-72 hours, it indicates TB infection.
Explanation of each option:
· (a) Schick test – Used to determine diphtheria immunity, not TB. A Schick-negative reaction indicates immunity, while a positive reaction shows susceptibility.
· (b) Mantoux Test – Correct answer. The Tuberculin Skin Test (TST) is a standard method for detecting TB infection by measuring the skin reaction.
· (c) VDRL Test – Used to diagnose syphilis, not TB. It detects antibodies against Treponema pallidum, the bacteria causing syphilis.
· (d) ELISA Test – Used to detect HIV/AIDS and other viral infections, but not TB. It detects specific antibodies in the blood.