Standard syphilis serology (RPR, TPHA) cannot distinguish syphilis from other treponematoses. How is distinction made?...

Question

Standard syphilis serology (RPR, TPHA) cannot distinguish syphilis from other treponematoses. How is distinction made?

Accepted Answer

Standard tests CANNOT distinguish - all treponematoses produce cross-reactive antibodies; distinction relies on clinical features, epidemiology, and anatomical site

Answer

RPR positive only in syphilis

Answer

TPHA positive only in syphilis

Answer

PCR always distinguishes subspecies

Answer

A specific yaws test exists

uk-dtmh MCQ (SBA): Treponematoses Serological Indistinguishability

Standard syphilis serology (RPR, TPHA) cannot distinguish syphilis from other treponematoses. How is distinction made?