Congenital syphilis can be best diagnosed by:: (A) IgM FTAabs, (B) IgG FTAabs, (C) VDRL, (D) TPI
Answer is A. IgM-FTA-Abs test is a modification to identify fetal IgM and clarify the diagnosis of congenital syphilis or a re-infection. Ref: Color Atlas of Dermatology By Main Rocken, Main Schaller - 2012