Guidelines
Specimen Collection & Laboratory Testing

Specimen Collection & Laboratory Testing

Droplet / Contact Precautions

NP swabs can be performed using Droplet/Contact Precautions and do not require an N95 respirator

  • Nasopharyngeal swabs remain the gold standard for COVID-19 sample collection, whether for standard PCR or rapid (GeneXpert) testing.
  • The nares/throat specimen has a 95% sensitivity which is comparable to a Nasopharyngeal specimen.
  • Swish and gargle is an alternative to nasopharyngeal or nares/throat specimens for all age groups, but not preferred given the additional time and preparation required. If also requesting influenza or RSV testing, this specimen type is not appropriate and NP or nares/throat specimen must be collected.
  • There is, as of yet, no specific scientific study to inform the taking of nasopharyngeal swabs in patients with COVID-19 is an AGMP. Various jurisdictions have different guidance. Obtaining a nasal, throat or nasopharyngeal swab is a procedure which requires considerably less time than most procedures considered to be AGMP, and in many cases does not induce significant coughing. However, at least in some cases, coughing and sneezing can be induced.
  • All HCWs who are to obtain specimens should always conduct a PCRA before the procedure.
  • Collecting an NP swab from a coughing or sneezing patient can be mitigated by placing a surgical/procedure mask over the patient’s mouth.
  • Limit persons in the room during the procedure to the patient and the HCW obtaining the specimen
  • Specimens should be obtained by the HCW experienced in their collection.
  • Provide patients with tissues to contain coughs and sneezes after the procedure has been completed.
  • HCW performing the test should stand to the side of the patient, not directly in front of them, and should move away from the patient (more than 2 meters) when the procedure is complete.

More Information

If you have questions relating to testing, please contact Microbiology Lab