Trichomoniasis other diagnostic studies
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Other Diagnostic Studies
FDA-cleared tests for trichomoniasis in women include OSOM Trichomonas Rapid Test (Genzyme Diagnostics, Cambridge, Massachusetts), an immunochromatographic capillary flow dipstick technology, and the Affirm™ VP III (Becton Dickenson, San Jose, California), a nucleic acid probe test that evaluates for T. vaginalis, G. vaginalis, and C. albicans. These tests are both performed on vaginal secretions and have a sensitivity >83% and a specificity >97%. Both tests are point-of-care diagnostics. The results of the OSOM Trichomonas Rapid Test are available in approximately 10 minutes, and results of the Affirm™ VP III are available within 45 minutes. Although these tests tend to be more sensitive than vaginal wet preparation, false positives might occur especially in low prevalence populations. Culture is the most sensitive and specific commercially available method of diagnosis. In women in whom trichomoniasis is suspected but not confirmed by microscopy, vaginal secretions should be cultured for T. vaginalis.