Performance and use of the Reiter protein complement-fixation (RPCF) test.

Abstract
In order to gain maximum benefit from the use of the RPCF test to differentiate between syphilis and biologic false positivity, it must be performed under standard conditions, must be carried out with undiluted serum in a final concentration of 1 to 6 and the results must be evaluated in conjunction with and for corroboration of cardiolipin reaginic tests.