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What is Which is false about syphilis - and explain in detail?
Ans. is 'b' i.e., TPHA is earliest to be (+) ye About other options - TPI is a specific treponemal test and gives definite diagnosis. - VDRL test becomes positive 7-10 days after the appearance of primary chancre (3-5 weeks after acquiring the infection.) - All treponemal and nontreponemal serological tests may be positive in nonveneral treponematoses (eg yaws, pinta and endemic syphilis), so can not differentiate nonveneral treponematoses from syphilis.