<prompt> A 16 year old student repoed for the evaluation of multiple hypopigmented macules on the trunk and limbs. All of the following tests are useful in making a diagnosis of leprosy, except:Sensation testingLepromin testSlit smearsSkin biopsy  <response>: B i.e. Lepromin test Lepromin test has no diagnostic value; it has only prognostic significanceQ as it tells about cell mediated immunity classify the type of disease. Lepromin test is most positive in TT because cell mediated immunity is least suppressedQ 