[Electroimmunodiffusion reaction in the diagnosis of syphilis (author's transl)].

A group of 800 human sera, obtained from syphilitic and nonsyphilitic individuals were tested in the counterimmunoelectrophoresis (CIE) technique with Reiter protein antigen. The sera were assayed for comparison in the following treponemal and nontreponemal tests: standard serologic tests for syphilis with cardiolipin; complement fixation (Kolmer 1/5 vol) with Reiter protein antigen (RPCF); T. pallidium immobilization (TPI) test; haemoagglutination test for T. pallidum antibodies (TPHA). The sensitivity and specificity of CIE test, its simplicity, the low cost, the possibility of practical application as a routine test for syphilis serology were discussed.