<prompt> Most sensitive test for Treponema ?VDRLRPRFTA-ABSKahn  <response>: Ans. is c i.e., FTA-ABS test TPPA is the most sensitive serological test overall considering all stages of syphilis. All the serological tests have 100 sensitivity in secondary stage of syphilis. Amongst the given options FTA - ABS is most sensitive. Sensitivity of serodiagnostic tests in syphilis Test Primary Secondary Latent Teiary VDRL RPR 78 74-87 100 95 88-100 7137-94 FTA-ABS 84 70-100 100 100 96 TP - PA 89 100 100 NA 