Related Experiment Video
Updated: Nov 18, 2025
07:44
Detection of SARS-CoV-2 Receptor-Binding Domain Antibody using a HiBiT-Based Bioreporter
Published on: August 12, 2021
3.4K
COVID-19 Antibody Tests and Their Limitations
Guoqiang Liu1,2, James F Rusling2,3,4,5
1Medical College, Jiaxing University, 118 Jiahang Road, Jiaxing, Zhejiang Province, China.
ACS Sensors
|February 5, 2021
Summary
Current COVID-19 antibody tests have limitations impacting accuracy. Understanding factors causing false negatives and positives is crucial for reliable SARS-CoV-2 diagnosis and interpretation of results.
Area of Science:
- Virology
- Immunology
- Diagnostic Medicine
Background:
- COVID-19, caused by SARS-CoV-2, is a global health crisis.
- Diagnostic methods include PCR, antigen, and antibody tests.
- Antibody tests detect prior SARS-CoV-2 exposure.
Purpose of the Study:
- To review current SARS-CoV-2 antibody tests.
- To highlight limitations and causes of inaccuracy in antibody immunoassays.
- To provide recommendations for assay developers and clinicians.
Main Methods:
- Review of existing literature on COVID-19 diagnostic tests.
- Focus on antibody immunoassay formats and performance.
- Analysis of factors influencing test accuracy.
Main Results:
- Antibody tests suffer from inaccuracies, including false negatives and false positives.
- False negatives can result from assay design, testing windows, and individual variations.
- False positives may stem from cross-reactivity with other viruses or autoimmune conditions.
Conclusions:
- Assay developers must improve formats and antigen/antibody selection for better sensitivity and specificity.
- Clinicians need to be aware of test limitations for accurate patient assessment.
- Smart interpretation of imperfect antibody tests is essential for managing COVID-19 diagnosis.
