[Value of a technical modification for the detection of syphilis on Technicon BT 15. Study on 10.076 samples tested with 2 "VDRL-carbon" antigens].

Previously described Manifold for routine detection of Syphilis using charcoal particles with Auto-Analyzer did not appear satisfactory to the authors. A modified Manifold is described which includes a longer time of incubation and decantation, without any saline addition. Two charcoal antigen suspensions (K-Ag, ART) were tested on 10.076 samples from blood donors, comparatively with 13.614 samples tested through manual Kline and VDRL methods: no significative difference was noted in detection of Syphilis. Differences between both antigen suspensions (ART antigen gives more positive resultats than K-Ag) can be attributed to "false positive" reactions.