<prompt> The following test is not used for dignosis of leprosy-Lepromin testslit skin smearFine needle aspiration cytologyskin biopsy  <response>: Lepromatous test it is not a diagnostic test but a prognostic test. it helps in the classification of leprosy. antigens used for skin testing: mitsuda lepromin, Dharmendra leprominmanifests as biphasic reaction: early Fernandez 48-72hrsand late mitsuda reaction 3-4weeksRepresents Cmi towards antigen. Erythema and induration more than 5mm indicates positive and good delayed hypersensitivity. lepromin test positive: tuberculoid, borderline tuberculoid leprosy lepromin test negative in lepromatous leprosy, borderline lepromatous leprosyand mid borderline leprosy iadvl textbook of dermatologypage 2060 