FIGURE 3: Treponemal and nontreponemal test results, interpretation, and conduct.
Source: adapted from the Clinical Protocol and Therapeutic Guidelines for Comprehensive Care for People with Sexually Transmitted Infections, 2020 13 .
Notes: a) Immediate treatment with benzathine benzylpenicillin after only one syphilis reacting test (treponemal or nontreponemal test) is indicated in situations described in item "Treatment", without exclusion of need for a second test for diagnosis definition; b) Documented previous treatment with titration drop in at least two dilutions; c) Immunological window: the period between infection and sufficient antibody production for immunological test detection.