[The solid-phase hemadsorption (SPHA) test in syphilis reinfection]. / Der Solid-Phase-Hämadsorptions(SPHA)-Test bei Syphilis-Reinfektionen.

In patients with re- and multiple syphilitic infections the titres of VDRL-, FTA- and SPHA-tests were compared. Among reinfections in which the VDRL gave no or initially no hint for a new infection, the SPHA is significantly reactive. The increase of IgG in the FTA-test confirmed the specificity of a new infection.