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Flow cytometry is a sensitive and rapid tool for ruling out NGU
  1. Alessandro Camporese
  1. Correspondence to Dr Alessandro Camporese, Clinical Microbiology and Virology Department, S Maria Degli Angeli Regional Hospital, via Montereale 24, Pordenone 33170, Italy; alessandro.camporese{at}

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Acute non-gonococcal urethritis (NGU) is one of the most common sexually transmitted infections affecting both men and women. The diagnosis of NGU has traditionally required microscopic evidence of urethritis. However, a significant proportion of patients with urethral symptoms do not have microscopic evidence of urethritis. A recently published article by Orellana et al1 highlighted the low sensitivity of Gram stain in …

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  • Competing interests None.

  • Provenance and peer review Not commissioned; internally peer reviewed.