What is the role of direct fluorescent antibody (DFA) testing in the workup of chlamydial genitourinary infections (chlamydia)?

Updated: Sep 25, 2018
  • Author: Shahab Qureshi, MD, FACP; Chief Editor: Michael Stuart Bronze, MD  more...
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Direct fluorescent antibody (DFA) testing is a laboratory assay for C trachomatis that has a sensitivity of 50-80% and a specificity of 99% specificity. It is the method of choice for confirming other assays. However, it is labor intensive and requires skilled personnel.

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