Article Text

PDF

Evaluation of swab transport systems against a published standard
  1. R P Human,
  2. G A Jones
  1. Microbiology Laboratory, Derriford Hospital, Plymouth, Devon PL6 8DH, UK
  1. Correspondence to:
 Mr R P Human
 Microbiology Laboratory, Derriford Hospital, Plymouth, Devon PL6 8DH, UK; robert.humanphnt.swest.nhs.uk

Abstract

Background: Before the publication of the M40-A standard by the United States National Committee for Clinical Laboratory Standards (NCCLS), no quality control data for swab transport systems (STSs) had been available.

Aims: To compare three commercially available STSs against the published standard to ascertain bacterial survival after a set holding time.

Method: Charcoal and non-charcoal containing swabs were inoculated with standard volumes and numbers of a range of bacteria commonly isolated from clinical material. Bacterial counts were taken at time zero, six, 24, and 48 hours, with the results being compared against the NCCLS standard.

Results: The standard clearly differentiated between the three STSs tested, with one product being superior to the other two products in providing better survival.

Conclusion: The standard now provides manufacturers and users of STSs with meaningful data to provide, purchase, and compare an STS for routine clinical use.

  • CFU, colony forming units
  • NCCLS, National Committee for Clinical Laboratory Standards
  • STS, swab transport system
  • bacterial survival
  • quality control
  • transport swabs

Statistics from Altmetric.com

Footnotes

    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.