M134-1

Throat: no group A, C, G β-hemolytic streptococcus or Arcanobacterium haemolyticum  – Shipped February 2014

HISTORY

The challenge was sent to category A, B, and C laboratories. The sample was a simulated throat swab obtained from a 10 year old patient with pharyngitis.

Laboratories were expected to report the sample as culture negative for specific pathogens.

MAIN EDUCATIONAL POINTS from M134-1

  1. Negative reports from throat swab cultures should always be pathogen specific (eg. No Group A, C, or G streptococci isolated) so that clinicians know exactly what the laboratory looked for.
  2. Organisms that are commensals in the throat should not be reported as this may be clinically misleading, resulting in inappropriate and/or unnecessary treatment.

Full critique (PDF)

Posted in Clinical Bacteriology Results, critiques