Scientific fact: Only 80% of exposed or infected individuals test positive to RPR at 8 weeks; By 16 wks, 90+% tests positive to RPR test, however, 95+% patients tests positive to TPHA (treponema pallidum hemagglutination test). Negative combination tests, RPR plus TPHA, at 16 weeks will be more convincing.
Answered 3/31/2023
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