[Relationship between M-Protein of Multiple Myeloma and False Positive Syphilis Serological Results].

Background: The false positive in conventional syphilis serological test was found in patients with multiple myeloma (MM).

Objective: To investigate the relationship between the M-protein of patients with MM and the false positive in conventional syphilis serologic test.

Methods: The M-protein of 68 MM cases was typed with immunofixation electrophoresis and 68 cases of MM were screened with non-specific and specific syphilis serologic tests, then the samples with syphilic serological positive were chosen and confirmed with immonobloting test, finally the relationship between M protein of MM and the false positive of syphilis serological test were analysed.