Evidence map›Paper›PMID 33152411›Full record

ArticleJournal of virological methods2021

A high-throughput Anti-SARS-CoV-2 IgG testing platform for COVID-19.

Jinwei Du, Eric Chu, Dayu Zhang, Chuanyi M Lu, Aiguo Zhang, Michael Y Sha

Open access · hybridAbstract readEvaluation Study
In one paragraph

Article in Journal of virological methods, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed, 1 pooled it
0.2field-weighted citation impact, top 38% 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

5 citing papers in PubMed, 1 synthesis or guideline pooled it, 7 citations in OpenAlex.

  1. Pooled it
  2. Enhancement of Structural Stability and IgG Affinity of aAntibodies (Basel, Switzerland) · 2025
    Article
  3. Article
  4. Review
  5. 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

6 authors at 1 institution in 1 country.

Jinwei DuDiaCarta Inc, 2600 Hilltop Dr. Richmond, CA 94806, United States.
Eric ChuDiaCarta Inc, 2600 Hilltop Dr. Richmond, CA 94806, United States.
Dayu ZhangDiaCarta Inc, 2600 Hilltop Dr. Richmond, CA 94806, United States.
Chuanyi M LuUniversity of California and VA Healthcare System, San Francisco, CA, United States.
Aiguo ZhangDiaCarta Inc, 2600 Hilltop Dr. Richmond, CA 94806, United States.
Michael Y ShaDiaCarta Inc, 2600 Hilltop Dr. Richmond, CA 94806, United States. Electronic address: msha@diacarta.com.
San Francisco VA Health Care System · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSerology tests for detecting the antibodies to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) can identify previous infection and help to confirm the presence of current infection.

objectiveThe aim of this study was to evaluate the performances of a newly developed high throughput immunoassay for anti-SARS-CoV-2 IgG antibody detection.

resultsClinical agreement studies were performed in 107 COVID-19 patient serum samples and 226 negative donor serum/plasma samples. Positive percent agreement (PPA) was 46.15 % (95 % CI: 19.22 % ∼74.87 %), 61.54 % (95 % CI: 31.58 % ∼86.14 %), and 97.53 % (95 % CI: 91.36 % ∼99.70 %) for samples collected on 0-7 days, 8-14 days, and ≥15 days from symptom onset, respectively. Negative Percent Agreement (NPA) was 98.23 % (95 % CI: 95.53 % ∼99.52 %). No cross-reactivity was observed to patient samples positive for IgG antibodies against the following pathogens: HIV, HAV, HBV, RSV, CMV, EBV, Rubella, Influenza A, and Influenza B. Hemoglobin (200 mg/dL), bilirubin (2 mg/dL) and EDTA (10 mM) showed no significant interfering effect on this assay.

conclusionAn anti-SARS-CoV-2 IgG antibody assay with high sensitivity and specificity has been developed. With the high throughput, this assay will speed up anti-SARS-CoV-2 IgG testing.

Indexed as

Antibodies, ViralCOVID-19COVID-19 Serological TestingHigh-Throughput Screening AssaysHumansImmunoassayImmunoglobulin GReproducibility of ResultsSARS-CoV-2Sensitivity and SpecificityAntibodies, ViralImmunoglobulin GCOVID-19IgG testImmunoassaySARS-CoV-2

Identifiers

PMID33152411
PMCPMC7605757
OpenAlexW3097462806

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.