Evidence map›Paper›PMID 34449650›Full record

ArticleInfectious disease reports2021

Performance of Qualitative and Quantitative Antigen Tests for SARS-CoV-2 Using Saliva.

Isao Yokota, Takayo Sakurazawa, Junichi Sugita, Sumio Iwasaki, Keiko Yasuda, Naoki Yamashita, Shinichi Fujisawa, Mutsumi Nishida, Satoshi Konno, Takanori Teshima

Abstract read
In one paragraph

Article in Infectious disease reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed, 2 pooled it
–field-weighted citation impact
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

8 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Rapid, point-of-care antigen tests for diagnosis of SARS-CoV-2 infection.The Cochrane database of systematic reviews · 2022
    Pooled it
  2. Pooled it
  3. Prospective study of three saliva qualitative antigen testing kits for the detection of SARS-CoV-2 among mainly symptomatic patients in Japan.Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy · 2023
    Observational
  4. SARS-CoV-2 Omicron detection by antigen tests using saliva.Journal of clinical virology plus · 2022
    Article
  5. Article
  6. Review
  7. ESCMID COVID-19 guidelines: diagnostic testing for SARS-CoV-2.Clinical microbiology and infection : the official publication of the European Society of Clinical Microbiology and Infectious Diseases · 2022
    Article
  8. Article
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

10 authors.

Isao YokotaDepartment of Biostatistics, Faculty of Medicine, Hokkaido University, Sapporo 060-8638, Japan.ORCID 0000-0001-6254-2225
Takayo SakurazawaDivision of Laboratory and Transfusion Medicine, Hokkaido University Hospital, N15, W7, Kita-ku, Sapporo 060-8638, Japan.ORCID 0000-0003-1163-7755
Junichi SugitaDivision of Laboratory and Transfusion Medicine, Hokkaido University Hospital, N15, W7, Kita-ku, Sapporo 060-8638, Japan.ORCID 0000-0003-3852-5075
Sumio IwasakiDivision of Laboratory and Transfusion Medicine, Hokkaido University Hospital, N15, W7, Kita-ku, Sapporo 060-8638, Japan.ORCID 0000-0001-7111-5276
Keiko YasudaDivision of Laboratory and Transfusion Medicine, Hokkaido University Hospital, N15, W7, Kita-ku, Sapporo 060-8638, Japan.
Naoki YamashitaDivision of Laboratory and Transfusion Medicine, Hokkaido University Hospital, N15, W7, Kita-ku, Sapporo 060-8638, Japan.
Shinichi FujisawaDivision of Laboratory and Transfusion Medicine, Hokkaido University Hospital, N15, W7, Kita-ku, Sapporo 060-8638, Japan.
Mutsumi NishidaDivision of Laboratory and Transfusion Medicine, Hokkaido University Hospital, N15, W7, Kita-ku, Sapporo 060-8638, Japan.ORCID 0000-0002-8406-7311
Satoshi KonnoDepartment of Respiratory Medicine, Faculty of Medicine, Hokkaido University, Sapporo 060-8638, Japan.
Takanori TeshimaDivision of Laboratory and Transfusion Medicine, Hokkaido University Hospital, N15, W7, Kita-ku, Sapporo 060-8638, Japan.ORCID 0000-0002-0941-271X

Funding

Ministry of Health, Labour and Welfare 20HA2002
6 · The paper itself

Abstract

The rapid detection of SARS-CoV-2 is critical for the prevention of disease outbreaks. Antigen tests such as immunochromatographic assay (ICA) and chemiluminescent enzyme immunoassay (CLEIA) can yield results more quickly than PCR. We evaluated the performance of ICA and CLEIA using 34 frozen PCR-positive (17 saliva samples and 17 nasopharyngeal swabs [NPS]) and 309 PCR-negative samples. ICA detected SARS-CoV-2 in only 14 (41%) samples, with positivity rates of 24% in saliva and 59% in NPS. Notably, ICA detected SARS-CoV-2 in 5 of 6 samples collected within 4 days after symptom onset. CLEIA detected SARS-CoV-2 in 31 (91%) samples, with a positivity of 82% in saliva and 100% in NPS. These results suggest that the use of ICA should be limited to an earlier time after symptom onset and CLEIA is more sensitive and can be used in situations where quick results are required.

Indexed as

CLEIACOVID-19EsplineICALumipulsesalivaSARS-CoV-2

Identifiers

PMID34449650
PMCPMC8395849

What OpenQuestion holds

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Registered trials

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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.