<prompt> Congenital syphilis can be best diagnosed by -IgM FTA- ABSIgG FTA-ABSVDRLTPI  <response>: Nontreponemal test VDRL detects mainly IgG, So cannot differentiate from passive maternal transfer Method to diagnose congenital syphilis is: A reactive IgM test specific for syphilis19s IgM FTA-ABS, Captia syphilis M test IgM ELISA and Western blot 