This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
Tuberculin test is positive if induration is ? 
Select and explain. 
A. >2min, B. >5mm, C. >7mm, D. >10mrn
D: >10mrn
Answer: D: >10mrn 
Explanation: Ans. is 'd' i.e., > 10mm TEST . Skin testing (tuberculin test) is most widely used screening test for M. tuberculosis infection. . There are three main tests currently in use :