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Rapid identification and isolation of COVID-19 patients by prescreening VTM samples? The OnSite COVID-19 Ag Rapid Test by CTK might be the answer!

The performance of the OnSite® COVID-19 Ag Rapid Test by CTK was evaluated using sample material from nasopharyngeal swabs stored in viral transport media. The swabs were previously used to screen for SARS-CoV-2 using qPCR.  The OnSite® COVID-19 Ag Rapid Test sensitivity was between 86-90% depending on the viral load*.

The study used leftover sample material selected from samples sent to a Microbiology Department for SARS-CoV-2 PCR detection. A total of 146 samples were tested, 87 positives and 60 negatives. The results were as follows:

The data shows that the OnSite® COVID-19 Ag Rapid Test can be performed using VTM samples, allowing for the rapid identification and isolation of SARS-CoV-2 infected patients. It also provides impacted health systems an easy to use and cost-efficient test to prescreen VTM samples for positive results before using more comprehensive methods such as PCR.

To read the white paper, click here


Andersen, I. (2020) Performance Evaluation of OnSite COVID-19 Ag Rapid [White paper]. SSI DIAGNOSTICA.