<prompt> In patients with leprosy, lepromin test is performed after injecting intradermally 0.1 ml of lepromin. This test is used for:TreatmentPrognosisDiagnosisEpidemiological investigations  <response>: Lepromin test is not a diagnostic test, as it may give positive result in normal subjects and negative results in lepromatous and near-lepromatous cases. Uses of Lepromin test: To evaluate the immune status cell mediated immunity of leprosy patients In classifying the disease To estimate the prognosis of leprosy patients Ref: Parks Textbook of Preventive and Social medicine, 19th edition, Page 271. 