Evidence map›Paper›PMID 33514627›Full record

ArticleJournal of clinical microbiology2021

Self-Collected Saline Gargle Samples as an Alternative to Health Care Worker-Collected Nasopharyngeal Swabs for COVID-19 Diagnosis in Outpatients.

David M Goldfarb, Peter Tilley, Ghada N Al-Rawahi, Jocelyn A Srigley, Geoffrey Ford, Heather Pedersen, Abhilasha Pabbi, Stephanie Hannam-Clark, Marthe Charles, Michelle Dittrick and 3 more

Open access · greenAbstract read
In one paragraph

Article in Journal of clinical microbiology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 73 papers, 6 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
73citing papers in PubMed, 6 pooled it
6.6field-weighted citation impact, top 2% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

73 citing papers in PubMed, 6 syntheses or guidelines pooled it, 107 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Performance of saline and water gargling for SARS-CoV-2 reverse transcriptase PCR testing: a systematic review and meta-analysis.European respiratory review : an official journal of the European Respiratory Society · 2022
    Pooled it
  5. Pooled it
  6. Pooled it
  7. Trial
  8. Trial
  9. The role of mouthwash sampling in SARS-CoV-2 diagnosis.European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology · 2021
    Trial
  10. Article
  11. Article
  12. Detection of Respiratory Pathogens in Saliva and Mouthwash Samples in Children.Journal of the Pediatric Infectious Diseases Society · 2025
    Article
  13. Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Prospective, clinical comparison of self-collected throat-bilateral nares swabs and saline gargle compared to health care provider collected nasopharyngeal swabs among symptomatic outpatients with potential SARS-CoV-2 infection.Journal of the Association of Medical Microbiology and Infectious Disease Canada = Journal officiel de l'Association pour la microbiologie medicale et l'infectiologie Canada · 2024
    Article
  19. Article
  20. Review

13 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

13 authors at 4 institutions in 1 country.

David M GoldfarbDepartment of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada david.goldfarb@cw.bc.ca.ORCID 0000-0003-0835-9504
Peter TilleyDepartment of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada.
Ghada N Al-RawahiDepartment of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada.ORCID 0000-0003-2719-9112
Jocelyn A SrigleyDepartment of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada.
Geoffrey FordBC Centre for Disease Control, Vancouver, British Columbia, Canada.
Heather PedersenBC Centre for Disease Control, Vancouver, British Columbia, Canada.
Abhilasha PabbiClinical Informatics, BC Children's Hospital & BC Women's Hospital & Health Centre, Vancouver, British Columbia, Canada.
Stephanie Hannam-ClarkClinical Informatics, BC Children's Hospital & BC Women's Hospital & Health Centre, Vancouver, British Columbia, Canada.
Marthe CharlesDepartment of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada.ORCID 0000-0002-3663-0974
Michelle DittrickDepartment of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada.
Vijay J GadkarDepartment of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada.
Jeffrey M PernicaDepartment of Pediatrics, McMaster University, Hamilton, Ontario, Canada.
Linda M N HoangDepartment of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada.
University of British Columbia · CABC Centre for Disease Control · CAB.C. Women's Hospital & Health Centre · CAMcMaster University · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We assessed the performance, stability, and user acceptability of swab-independent self-collected saliva and saline mouth rinse/gargle sample types for the molecular detection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in adults and school-aged children. Outpatients who had recently been diagnosed with COVID-19 or were presenting with suspected COVID-19 were asked to have a nasopharyngeal (NP) swab collected and provide at least one self-collected sample type. Participants were also asked about sample acceptability using a five-point Likert scale. For those previously diagnosed with COVID-19, all samples underwent real-time PCR testing using a lab-developed assay, and the majority were also tested using an FDA-authorized assay. For those presenting with suspected COVID-19, only those with a positive nasopharyngeal swab sample went on to have other samples tested. Saline mouth rinse/gargle and saliva samples were tested daily at time zero, day 1, and day 2 to assess nucleic acid stability at room temperature. Fifty participants (aged 4 to 71 years) were included; of these, 40 had at least one positive sample and were included in the primary sample yield analysis. Saline mouth rinse/gargle samples had a sensitivity of 98% (39/40), while saliva samples had a sensitivity of 79% (26/33). Both saline mouth rinse/gargle and saliva samples showed stable viral RNA detection after 2 days of room temperature storage. Mouth rinse/gargle samples had the highest (mean, 4.9) and health care worker (HCW)-collected NP swabs had the lowest acceptability scores (mean, 3.1). In conclusion, saline mouth rinse/gargle samples demonstrated higher combined user acceptability ratings and analytical performance than saliva and HCW-collected NP swabs. This sample type is a promising swab-independent option, particularly for outpatient self-collection in adults and school-aged children.

Indexed as

COVID-19OutpatientsAdultChildCOVID-19 TestingHealth PersonnelHumansNasopharynxSalivaSARS-CoV-2Specimen HandlingCOVID-19garglePCRsalivaSARS-CoV-2

Identifiers

PMID33514627
PMCPMC8092743
OpenAlexW3122970113

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.