This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Communicable diseases, Subject name: Social & Preventive Medicine
Not true about lepromine test is - 
Select and explain. 
A. Helps in classification of leprosy, B. Negative in most of the child in 1st 6 month of life, C. It is a diagnostic test, D. BCG vaccination conves lepra reaction from negative to positive
C: It is a diagnostic test
Answer: C: It is a diagnostic test 
Explanation: Lepromin test is not a diagnostic test. The 2 drawbacks that stand in the way of this test being used for diagnosis are : Positive results in non cases Negetive results in lepromatous or near lepromatous cases Reference; Park&;s Textbook of preventive and social medicine, 24th edition.Pg no. 338