ANTIGEN TESTING——- MANY PURCHASING OPTIONS
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The COVID-19 Antigen Rapid Test – a chromatographic lateral flow immunoassay – checks for protein fragments from the virus and thus for its direct, physical presence in the body. It is performed using a swab from the oral cavity or the nasopharynx. This is extracted in a buffer solution and then pipetted onto the test cassette. A qualitative result is ready in less than 20 minutes.
The diagnostic sensitivity is 97.56 % (ct value: 20 – 30), and the diagnostic specificity is >99.9 %. That means that positive results from antigen tests are very precise. However, as there is always a residual risk of a false-negative result, when in doubt, a PCR test should be carried out to confirm negative results. The choice between antibody, antigen and PCR tests is not an either/or decision. Rather, the best tactic is a combined application.
Test properties:
Optimised testing process
High specificity (> 99.9 %)
Highly sensitive with high viral loads: 97.56 % (ct-value: 20 – 30)
Easy to use
Fast and reliable test results in just 15 minutes
Testing can be performed using nasal, naso- and oropharyngeal samples
Can be stored at room temperature
All test components – including sterile swabs – are included
No cross-reactivity with seasonal coronaviruses (like hCoV-229E, -HKU1, -NL63 and -OC43) nor influenza viruses (like influenza A/B)
