Evidence map›Paper›PMID 34014785›Full record

ArticleExpert review of molecular diagnostics2021

Comparative evaluation of a dual-target real-time RT-PCR assay for COVID-19 diagnosis and assessment of performance in pooled saliva and nasopharyngeal swab samples.

Cyril C Y Yip, Kit-Hang Leung, Anthony C K Ng, Kwok-Hung Chan, Kelvin K W To, Jasper F W Chan, Ivan F N Hung, Vincent C C Cheng, Siddharth Sridhar

Open access · greenAbstract readVideo-Audio Media
In one paragraph

Article in Expert review of molecular diagnostics, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
0.5field-weighted citation impact, top 34% 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

6 citing papers in PubMed, 11 citations in OpenAlex.

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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

9 authors at 3 institutions in 2 countries.

Cyril C Y YipDepartment of Microbiology, Queen Mary Hospital, Hong Kong Special Administrative Region, China.
Kit-Hang LeungDepartment of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China.
Anthony C K NgDepartment of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China.
Kwok-Hung ChanDepartment of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China.
Kelvin K W ToDepartment of Clinical Microbiology and Infection Control, The University of Hong Kong-Shenzhen Hospital, Shenzhen, Guangdong, China.ORCID 0000-0002-1921-5824
Jasper F W ChanDepartment of Clinical Microbiology and Infection Control, The University of Hong Kong-Shenzhen Hospital, Shenzhen, Guangdong, China.ORCID 0000-0001-6336-6657
Ivan F N HungDepartment of Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China.ORCID 0000-0002-1556-2538
Vincent C C ChengDepartment of Microbiology, Queen Mary Hospital, Hong Kong Special Administrative Region, China.
Siddharth SridharDepartment of Clinical Microbiology and Infection Control, The University of Hong Kong-Shenzhen Hospital, Shenzhen, Guangdong, China.ORCID 0000-0002-2022-8307
University of Hong Kong · HKUniversity of Hong Kong - Shenzhen Hospital · CNQueen Mary Hospital · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesSensitive molecular diagnostic assays are essential for COVID-19 diagnosis. We evaluated the Hecin Scientific SARS-CoV-2 nucleic acid test kit, a dual-target real-time RT-PCR assay targeting the SARS-CoV-2 N and ORF1ab genes.

methodsThe Hecin test kit's diagnostic performance in detecting SARS-CoV-2 RNA was compared to the LightMix Modular SARS and Wuhan CoV E-gene kit (TIB Molbiol) and an in-house single-tube nested real-time RT-PCR using 296 clinical specimens, 11 proficiency testing samples, and 30 low-positive deep throat saliva and nasopharyngeal swab (NPS) samples pooled into negative samples in ratios of 1:5, 1:10, and 1:30.

resultsThe limit-of-detection of the Hecin test kit was around 500 dC/mL for the N and ORF1ab targets. Sensitivity and specificity of the Hecin test kit were 98.1% (95% CI: 93.4-99.8%) and 100% (98.1-100%), respectively, when measured against the reference method. The Hecin test kit showed fair sensitivity (80%) in low-positive NPS samples pooled in ratios of 1:5 and 1:10. Its performance in pooled samples could be dramatically improved by adjusting the assay Ct cutoff.

conclusionThe Hecin test kit enables sensitive and specific detection of SARS-CoV-2 in clinical samples and pooled samples.

Indexed as

COVID-19COVID-19 Nucleic Acid TestingReal-Time Polymerase Chain ReactionReverse Transcriptase Polymerase Chain ReactionSpecimen HandlingHumansRNA, ViralSARS-CoV-2RNA, ViralCOVID-19diagnostic test evaluationpoolingreal-time RT-PCRSARS-CoV-2

Identifiers

PMID34014785
PMCPMC8182820
OpenAlexW3160718224

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.