KROK 1 2023 – Question 52 · KROK (Medicine) · Microbiology, Virology, and Immunology

During a regular examination, blood was taken from a vein of a pregnant woman for the Wasserman reaction. The reaction was positive. The patient and her husband deny extramarital sexual intercourse. What must be done to confirm or refute the diagnosis of syphilis?

  1. A. Perform the complement fixation test
  2. B. Repeat the Wasserman test
  3. C. Obtain a smear from the urethra
  4. D. Perform sedimentation tests
  5. E. Perform the Treponema pallidum immobilization test
Hint

The Wassermann reaction can be falsely positive, for example in pregnancy, so the next step must give different information from simply doing the same type of reaction again.

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