What is a COVID-19 Rapid Antigen Test Kit?
According to the Centers for Disease Control and Prevention (CDC), rapid antigen test kits are immunoassays used to detect the presence of SARS-CoV-2 (virus causing COVID-19) from a nasal swab specimen. Rapid antigen tests are less expensive than PCR testing and will provide results as fast as 15-30 minutes.
How does COVID-19 Rapid Antigen Test Kits work?
A sample taken from a nasal or throat swab, nasal secretions, or saliva is placed directly into an extraction buffer which will disrupt the SARS-CoV-2 virus to release its antigen proteins. The solution is then applied to a test cartridge where any present antigen proteins, such as the nucleocapsid protein (N protein), will migrate and interact with the strip-shaped coating of the test line which has SARS-CoV-2-antigen-specific antibodies. If the test line shows a change in colour, it indicates a positive result.
How to Read Results from a COVID-19 Rapid Antigen Test Kit?
Positive: 2 coloured lines will be present. Both in the C (control) and T (test) section.
Negative: 1 coloured line will be present in the C section.
Invalid: No coloured lines are present or 1 coloured line in the T section.
Can COVID-19 Rapid Antigen Test Kit be used as the sole diagnosis or as a confirmatory test for SARS-CoV-2 infection?
No, rapid antigen tests have been designed to act as a supplementary test for suspected cases of COVID-19. Testing can be performed on both symptomatic and asymptomatic patients to determine a result. Studies have shown that early testing within the first 4 days of sickness typically means a higher viral load providing easier detection.
Results from rapid antigen testing should NOT be used as the sole basis to diagnose COVID-19 because RT-PCR testing is still the gold standard for diagnosing COVID-19 due to its high specificity and sensitivity.
What are the benefits of COVID-19 Rapid Antigen Test Kit?
Rapid antigen tests offer a faster, less expensive alternative to RT-PCR testing with results available within 15-30 minutes. Pilot projects are ongoing throughout the world to determine the value of frequent rapid antigen testing to reduce transmission of COVID-19 when combined with other safety measures.
Are the Boson Rapid Antigen Test Kits Authorized for Use and Sale in Canada?
The Boson Rapid Antigen Test Kit has been granted Interim Order authorization by Health Canada (ID No. 323096). The kits are manufactured by Xiamen Boson Biotech Co. Ltd.
What are the performance statistics of the Boson Rapid Antigen Test Kits?
Specificity (ability of a test to correctly identify people without the disease): 98.04%
Sensitivity (ability of a test to correctly identify people with the disease): 93.75%