Research
Print page Print page
Switch language
The Capital Region of Denmark - a part of Copenhagen University Hospital
Published

Optimal Insertion Depth for Nasal Mid-Turbinate and Nasopharyngeal Swabs

Research output: Contribution to journalJournal articleResearchpeer-review

  1. Treatment Response Biomarkers in Asthma and COPD

    Research output: Contribution to journalReviewResearchpeer-review

  2. Effect of Liraglutide on Vascular Inflammation Evaluated by [64Cu]DOTATATE

    Research output: Contribution to journalJournal articleResearchpeer-review

  3. Infrared Thermography as a Method of Verification in Raynaud's Phenomenon

    Research output: Contribution to journalJournal articleResearchpeer-review

  4. Four-Dimensional Flow MRI of Abdominal Veins: A Systematic Review

    Research output: Contribution to journalReviewResearchpeer-review

  1. Is oropharyngeal sampling a reliable test to detect SARS-CoV-2?

    Research output: Contribution to journalLetterResearchpeer-review

  2. Risk Factors for Recurrence of Follicular Thyroid Cancer: A Systematic Review

    Research output: Contribution to journalReviewResearchpeer-review

  3. Surgeon-performed Transoral Ultrasound-Guided Aspiration of Peritonsillar Abscess

    Research output: Contribution to journalJournal articleResearchpeer-review

  4. Impact of human papillomavirus in sinonasal cancer-a systematic review

    Research output: Contribution to journalReviewResearchpeer-review

View graph of relations

Millions of people are tested for COVID-19 daily during the pandemic, and a lack of evidence to guide optimal nasal swab testing can increase the risk of false-negative test results. This study aimed to determine the optimal insertion depth for nasal mid-turbinate and nasopharyngeal swabs. The measurements were made with a flexible endoscope during the collection of clinical specimens with a nasopharyngeal swab at a public COVID-19 test center in Copenhagen, Denmark. Participants were volunteer adults undergoing a nasopharyngeal SARS-CoV-2 rapid antigen test. All 109 participants (100%) completed the endoscopic measurements; 52 (48%) women; 103 (94%) white; mean age 34.39 (SD, 13.2) years; and mean height 176.7 (SD, 9.29) cm. The mean swab length to the posterior nasopharyngeal wall was 9.40 (SD, 0.64) cm. The mean endoscopic distance to the anterior and posterior end of the inferior turbinate was 1.95 (SD, 0.61) cm and 6.39 (SD, 0.62) cm, respectively. The mean depth to nasal mid-turbinate was calculated as 4.17 (SD, 0.48) cm. The optimal depths of insertion for nasal mid-turbinate swabs are underestimated in current guidelines compared with our findings. This study provides clinical evidence to guide the performance of anatomically correct nasal and nasopharyngeal swab specimen collection for virus testing.

Original languageEnglish
Article number1257
JournalDiagnostics
Volume11
Issue number7
ISSN2075-4418
DOIs
Publication statusPublished - 14 Jul 2021

    Research areas

  • Antigen test, Clinical validation, COVID-19, Mid-turbinate sample, Nasal swab, Nasopharyngeal sample, SARS-CoV-2, Upper respiratory virus, Virus diagnostics

ID: 67741722