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Survey of the laboratory diagnosis of gonorrhoea and chlamydial infection in the UK
  1. Martina Toby1,2,
  2. Pamela Saunders2,
  3. Catherine A Ison2
  1. 1 Department of Genitourinary Medicine, Guys and St Thomas's NHS Foundation Trust, London, UK
  2. 2 Sexually Transmitted Bacteria Reference Unit, Microbiological Services, Public Health England, London, UK
  1. Correspondence to Dr Martina Toby, Harrison Wing, St Thomas’ Hospital, Westminster Bridge Road, London SE1 7EH, UK; Martina.toby{at}gmail.com

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The introduction of dual nucleic acid amplification tests (dual NAATs) for the detection of Neisseria gonorrhoeae (NG) and Chlamydia trachomatis (CT) has changed the laboratory diagnosis of these infections.1 Compared with culture for NG, the sensitivity and specificity of these tests for the diagnosis of gonorrhoea are high (>90%) but in low prevalence populations significant numbers of false-positive results can occur.2

In 2007, 29% of laboratories were using dual NAATs3 but there are no data on current usage to inform testing guidelines. We used an internet-based Public Health England survey tool comprised of 26 questions emailed to UK microbiology laboratories from May to June 2013 to assess usage. Responses …

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