Urethritis laboratory tests

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor-In-Chief: Cafer Zorkun, M.D., Ph.D. [2]

## Overview

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## Lab tests

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A swab is inserted 1-4cm into the urethra and rotated once. The swab is then smeared onto a glass slide and examined under a microscope. A commonly used cut-off for the diagnosis of urethritis is 5 or more polymorphs per high power field, but this definition has recently been called into doubt.[1]

Tests of gonorrhoea and chlamydia are sent on the swab.

## References

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1. ↑ Bradshaw CS; et al. "Etiologies of Nongonococcal Urethritis: Bacteria, Viruses, and the Association with Orogenital Exposure". J Infect Dis. 193 (3): 333&ndash, 5.CS1 maint: Explicit use of et al. (link)

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