Article Text

PDF

P122 Are pharyngeal swabs for CT/GC of value in heterosexual men? A retrospective review of a clinic cohort
  1. Maygol Dadgar1,
  2. Joseph Withers Green2,
  3. Siobhan Murphy1,
  4. Gary Brook1
  1. 1Central Middlesex Hospital, London, UK
  2. 2Imperial College Medical School, London, UK

Abstract

Background/introduction Pharyngeal testing for CT/GC is generally not recommended for heterosexual men whose only sexual exposure is cunilingus. However, some clinicians in this service also started sending self-taken swabs from heterosexual men when self-taken swabs became routine practice for MSM in 2014.

Aim(s)/objectives To measure the utility of pharyngeal CT/GC swabs in heterosexual men

Methods A retrospective case-note review of all heterosexual men who had been coded as having had a pharyngeal swab for CT/GC NAAT between July 2014 and August 2015.

Results 1374 eligible patients were identified. 25/1374 (1.8%) of these were GC NAAT +ve of which 4/25 (16%) were +ve in the pharynx, the others being +ve in the urine. 3/4 pharyngeal +ve specimens were GC NAAT +ve in the pharynx only, 1 was positive in the urine also. 110/1374 (8%) patients were CT NAAT +ve of which 1/110 (0.9%) was in the pharynx only, the rest being from urine specimens

Discussion/conclusion Out of 1374 pharyngeal swabs sent, only 5 (0.4%) were CT or GC +ve, of which 1 was also +ve in the urine. The 3 lone +ve pharyngeal GC NAAT specimens could be false-positive e.g. due to a cross-reaction with non-pathogenic Neisseria sp. Similarly the single CT+ve may be a false +ve assay. Alternatively, some of those patients with a +ve test may be MSM who had not revealed their status. Whatever the explanation, the very low pick-up rate does not justify taking pharyngeal CT/GC swabs in men who identify as being exclusively heterosexual.

Statistics from Altmetric.com

Request permissions

If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.