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Sampling is important in respiratory tract infectious disease diagnostics

  • The accuracy of rapid tests and especially sensitivity is highly dependent on the quality of sampling and the onset of the symptoms.
  • The diagnostic test result is only as good as the quality of the sample!

Sampling procedure for nasopharyngeal swab samples

  • Ask the patient blow their nose when possible
  • Bend the patient´s head backward.
  • Swiftly insert the swab into the nostril. The depth of insertion is around 4-8 cm for children and 8-12 cm for adults.
  • Rotate the swab against the nasopharyngeal mucosa and remove the swab.

Sampling procedure for throat swab samples

  • Press the tongue down with a spatula or hold it with fingers and a gauze.
  • Wipe the swab back and forth across the oropharynx and the tonsils to obtain an adequate sample.
  • Ensure that the sample is not contaminated by the normal flora of the mouth by avoiding contact with other surfaces, such as the tongue cheeks.

Flocked swabs

  • Only flocked swabs are recommended for sample collection. Copan flocked swabs have been clinically validated for the mariPOC® test system. The flocked swabs by Medical Wire (MWE) are technically suitable but require further clinical validation.
  • Considering the patient size, choose as large swab as possible in order to obtain high quality sample.