Evidence map›Paper›PMID 33552746›Full record

ArticlePeerJ2021

Evaluation of two fluorescence immunoassays for the rapid detection of SARS-CoV-2 antigen-new tool to detect infective COVID-19 patients.

Lorena Porte, Paulette Legarraga, Mirentxu Iruretagoyena, Valeska Vollrath, Gabriel Pizarro, Jose Munita, Rafael Araos, Thomas Weitzel

Open access · goldAbstract read
In one paragraph

Article in PeerJ, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 4 pooled it
3.0field-weighted citation impact, top 7% 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

18 citing papers in PubMed, 4 syntheses or guidelines pooled it, 45 citations in OpenAlex.

  1. Pooled it
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  3. Rapid, point-of-care antigen tests for diagnosis of SARS-CoV-2 infection.The Cochrane database of systematic reviews · 2022
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  14. SARS-CoV-2 rapid antigen testing in the healthcare sector: A clinical prediction model for identifying false negative results.International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases · 2021
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  15. SARS-CoV-2 rapid antigen detection tests.The Lancet. Infectious diseases · 2021
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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

8 authors at 1 institution in 1 country.

Lorena PorteLaboratorio Clínico, Clínica Alemana, Universidad del Desarrollo, Santiago, Chile.
Paulette LegarragaLaboratorio Clínico, Clínica Alemana, Universidad del Desarrollo, Santiago, Chile.
Mirentxu IruretagoyenaLaboratorio Clínico, Clínica Alemana, Universidad del Desarrollo, Santiago, Chile.
Valeska VollrathLaboratorio Clínico, Clínica Alemana, Universidad del Desarrollo, Santiago, Chile.
Gabriel PizarroLaboratorio Clínico, Clínica Alemana, Universidad del Desarrollo, Santiago, Chile.
Jose MunitaServicio de Infectología, Clínica Alemana de Santiago, Facultad de Medicina Clínica Alemana, Universidad del Desarrollo, Santiago, Chile.
Rafael AraosServicio de Infectología, Clínica Alemana de Santiago, Facultad de Medicina Clínica Alemana, Universidad del Desarrollo, Santiago, Chile.
Thomas WeitzelLaboratorio Clínico, Clínica Alemana, Universidad del Desarrollo, Santiago, Chile.ORCID 0000-0002-9804-2123
Universidad del Desarrollo · CL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundReal-Time Reverse-Transcription Polymerase Chain Reaction (RT-PCR) is currently the only recommended diagnostic method for SARS-CoV-2. However, rapid immunoassays for SARS-CoV-2 antigen could significantly reduce the COVID-19 burden currently weighing on laboratories around the world.

methodsWe evaluated the performance of two rapid fluorescence immunoassays (FIAs), SOFIA SARS Antigen FIA (Quidel Corporation, San Diego, CA, USA) and STANDARD F COVID-19 Ag FIA (SD Biosensor Inc., Gyeonggi-do, Republic of Korea), which use an automated reader. The study used 64 RT-PCR characterized clinical samples (32 positive; 32 negative), which consisted of nasopharyngeal swabs in universal transport medium.

resultsOf the 32 positive specimens, all from patients within 5 days of symptom onset, the Quidel and SD Biosensor assays detected 30 (93.8%) and 29 (90.6%) samples, respectively. Among the 27 samples with high viral loads (Ct ≤ 25), the two tests had a sensitivity of 100%. Specificity was 96.9% for both kits.

conclusionThe high performance of the evaluated FIAs indicates a potential use as rapid and PCR-independent tools for COVID-19 diagnosis in early stages of infection. The excellent sensitivity to detect cases with viral loads above ~10

Indexed as

Antigen detectionCovid-19DiagnosisRapid diagnostic testSARS-CoV-2

Identifiers

PMID33552746
PMCPMC7827970
OpenAlexW3122246055

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.