How Do They Test For Syphilis?

Syphilis can be diagnosed through a doctor's recognition of its symptoms; through microscopic identification of the syphilis bacteria; and blood tests. Doctors frequently use these approaches jointly to identify syphilis and the spot of infection.
There is a variety of diagnostic tests that can be used to diagnose Syphilis:
• Swab of chancre - in the case of primary and secondary syphilis
• Swab or scraping test
• Syphilis blood tests
• VDRL (Venereal Disease Research Laboratory) test
• RPR (rapid plasma reagin) test
• Syphilis antibody tests
o Fluorescent treponemal antibody-absorption (FTA-ABS) test
o Treponema pallidum hemagglutination assay (TPHA)
• Lumbar puncture (spinal tap) - to test CSF in case of syphilis exposure
• CSF syphilis tests
• Repetition of blood tests - some blood tests get up to 3 months to be there positive after contamination.

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