Trichomoniasis laboratory findings
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
Diagnosis of vaginal trichomoniasis is usually performed by microscopy of vaginal secretions, but this method has a sensitivity of only approximately 60%–70% and requires immediate evaluation of wet preparation slide for optimal results.
Laboratory Findings
Discomfort may increase during intercourse and urination. There may also be a yellow-green, itchy, frothy, foul-smelling ("fishy" smell) vaginal discharge. In rare cases, lower abdominal pain can occur.
In men, wet preparation is insensitive, and culture testing of urethral swab, urine, and semen is required for optimal sensitivity. No FDA-cleared PCR test for T. vaginalis is available in the United States, but such testing might be available from commercial laboratories that have developed their own PCR tests. [2][3]
Two trophozoites of Trichomonas vaginalis obtained from in vitro culture. Smear was stained with Giemsa.[4]