Evidence map›Paper›PMID 34119358›Full record

SynthesisIndian journal of medical microbiology2021

COVID diagnostics by molecular methods: A systematic review of nucleic acid based testing systems.

Parijat Das, Sudipto Mondal, Soumik Pal, Samadrita Roy, Anju Vidyadharan, Rajneesh Dadwal, Sanjay Bhattacharya, Deepak Kumar Mishra, Mammen Chandy

Abstract readSystematic Review
In one paragraph

Synthesis in Indian journal of medical microbiology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
–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.

  1. Trial
  2. Article
  3. Article
  4. Review
  5. Review
  6. Review
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  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

9 authors.

Parijat DasDepartment of Microbiology, Tata Medical Center, 700160, Kolkata, India. Electronic address: parijat.das@tmckolkata.com.
Sudipto MondalDepartment of Microbiology, Tata Medical Center, 700160, Kolkata, India.
Soumik PalDepartment of Microbiology, Tata Medical Center, 700160, Kolkata, India.
Samadrita RoyDepartment of Microbiology, Tata Medical Center, 700160, Kolkata, India.
Anju VidyadharanDepartment of Microbiology, Tata Medical Center, 700160, Kolkata, India.
Rajneesh DadwalDepartment of Microbiology, Tata Medical Center, 700160, Kolkata, India.
Sanjay BhattacharyaDepartment of Microbiology, Tata Medical Center, 700160, Kolkata, India.
Deepak Kumar MishraDepartment of Laboratory Hematology, Tata Medical Center, 700160, Kolkata, India.
Mammen ChandyDepartment of Clinical Hematology and Director, Tata Medical Center, Kolkata, 700160, India.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe selection of appropriate kit and PCR equipment for the detection of SARS CoV-2 is critically important in view of many options available in the diagnostic market. Since last year many molecular products are available for COVID-19 diagnostics., some of these diagnostics have become commercially available for healthcare workers and clinical laboratories. However, the diagnostic technologies have specific limitations and reported several false-positive and false-negative cases, especially during the early stages of kit development and use. The current article addresses these and other relevant questions important to the medical microbiologists running or aspiring to run COVID diagnostic services using PCR and related technologies.

methodsIn this Systematic Review we follow Preferred Reporting Items for a Systematic Review and Meta-analysis of Diagnostic Test Accuracy Studies (PRISMA-DTA). A total of 258 citations retrieved, among those 77 peer reviewed articles was assessed for eligibility, and 181 studies were excluded. Based on inclusion criteria final data extraction was done.

resultsThe question of diagnostic dilemma has also been addressed in view of discordant results between assays, inter-test variability, repeat testing requirements in specific settings and inconclusive or indeterminate results. Kit efficiency was satisfactory for all assays and the estimates varied within sample types and technology. Using clinical samples, we observed some variations in detection rate between kits. Importantly, none of the assays showed cross-reactivity with other respiratory (corona) viruses, except as expected for the SARS-CoV-1 E-gene.

conclusionsWe conclude SARS CoV-2 related molecular assays differed considerably in performance. Hence we need to understand importance of molecular diagnostics test interpretation in light of the latest pandemic virus.

Indexed as

COVID-19Health PersonnelHumansReverse Transcriptase Polymerase Chain ReactionSensitivity and SpecificityCBNAATCOVIDIsothermal amplificationRT-PCRSARS-CoV-2

Identifiers

PMID34119358
PMCPMC8189747

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.