1. TPHA [Treponema pallidum
haemagglutination] test is used for detection and titration of antibodies
against the causative agent of syphilis
.Once TPHA is positive, it remains so for life, although there might be no disease and the person is non-infectious but the TPHA remains positive.
2. It may indicate presence of syphilis but needs to be considered in relation with history & other tests by your dermatologist/venereologist & will require a detailed clinical examination as well.
3. Are you showing any signs of syphilis, [could be false positive reaction] if not your Doctor might recommend to go for TPI [treponema pallidum Immunization] and FTA-ABS [ fluorescent treponemal antibody absorption].
4.The test to know whether a person is cured or not is VDRL
.[which becomes negative within an year of treatment.] If it comes negative and TPHA is still positive [which remain for life time] This just means that you had an infection in past and now are totally cured.