What does it mean TPHA test is positive?

A positive TPHA (Treponema pallidum hemagglutination assay) test indicates the presence of antibodies against the bacterium Treponema pallidum, which causes syphilis. This result suggests that a person has been exposed to the syphilis pathogen, but it does not differentiate between current and past infections. Further testing may be needed to confirm an active infection and assess the stage of the disease.