The BioPlex® 2200 Syphilis IgM kit is a multiplex flow immunoassay for the qualitative numeric detection of Treponema pallidum IgM antibodies in human serum. The test system can be used in conjunction with a Syphilis IgG test as a screen of active or past infection. In addition, the Syphilis IgM kit can be used in conjunction with treponemal and/or non-treponemal based tests as an aid in identification of acute infection with T. pallidum. The Syphilis IgM kit delivers a composite result for a comprehensive examination of the causative agent. It reports results for the following: Syphilis IgM Composite, T. pallidum 17kDa, and T. pallidum 47kDa.