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Related Experiment Video

Updated: Nov 14, 2025

Large-Scale SARS-CoV-2 Testing Utilizing Saliva and Transposition Sample Pooling
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Road toward universal COVID-19 testing method - A review.

Ahamed Basha Abdul Bari1, Prince Johnson Samuel2

  • 1Physiology, Chettinad Hospital and Research Institute, Chengalpattu, India.

Journal of Immunoassay & Immunochemistry
|March 10, 2021
PubMed
Summary
This summary is machine-generated.

Diagnosing novel coronavirus disease requires reliable laboratory tests due to varied symptoms and asymptomatic cases. Reverse transcription-polymerase chain reaction (rRT-PCR) and CT chest imaging are recommended to prevent false negatives and community spread.

Keywords:
COVID-19Diagnostic testsPoint of care testing

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Area of Science:

  • Infectious Diseases
  • Diagnostic Medicine
  • Radiology

Background:

  • Novel coronavirus presents diverse symptoms, from mild to severe pneumonia, including asymptomatic infections.
  • Lack of definitive clinical signs necessitates reliance on laboratory diagnostics for accurate coronavirus disease confirmation.
  • Hematological and biochemical tests offer prognostic insights into patient conditions.

Purpose of the Study:

  • To evaluate the effectiveness of various diagnostic methods for novel coronavirus disease.
  • To identify the most sensitive and specific testing strategies for accurate diagnosis.
  • To propose a combined approach to minimize false negatives and curb community transmission.

Main Methods:

  • Review of hematological and biochemical tests for prognostic value.
  • Assessment of genetic assays, specifically reverse transcription-polymerase chain reaction (rRT-PCR), for sensitivity and specificity.
  • Analysis of computed tomography (CT) chest imaging findings over time.
  • Evaluation of immunological rapid tests for accuracy and false-negative rates.

Main Results:

  • Reverse transcription-polymerase chain reaction (rRT-PCR) is a time-consuming yet sensitive and specific diagnostic method.
  • Early-stage CT chest imaging shows minimal changes, with ground-glass lesions appearing from the second week onward.
  • Immunological rapid tests exhibit a high rate of false negatives, limiting their reliability.

Conclusions:

  • A combination of rRT-PCR or mass antibody testing with CT chest imaging is crucial for accurate diagnosis.
  • This integrated approach aims to reduce false negatives, thereby aiding in the prevention of widespread community transmission.
  • Effective diagnostic strategies are vital for managing the global impact of coronavirus disease.