: , , ||New cheaper, easier, accurate corona test ||
In what might turn out to be an important step in easy, inexpensive SARS-CoV-2 testing, a new rapid diagnostic test for novel coronavirus infection that uses saliva samples was granted an emergency use authorisation by the U.S. Food and Drug Administration (FDA) on August 15. It was submitted for authorisation by the FDA on July 14. The test uses a new method of processing saliva samples for testing coronavirus infection.
The test, called SalivaDirect, has high sensitivity, according to a preprint posted on medRxiv on August 4. According to the preprint, SalivaDirect test can detect when the number of virus copies in the saliva sample is as low as six-12 copies per microlitre. In contrast, testing nasopharyngeal swabs leads to false negative test results due to errors at the time of sample collection. The sensitivity was about 93%.
Official data shows 88-94% [sensitivity]. If you assume 90% sensitivity, this is the best accuracy (sensitivity) of any saliva test, Andy Slavitt, a former acting administrator of the Centers for Medicare and Medicaid Services in the Obama administration tweeted.
Collecting and testing saliva samples three steps collecting saliva without preservative buffers, proteinase K treatment and heat inactivation, and dualplex RT-qPCR virus detection.
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: , , ||New cheaper, easier, accurate corona test || In what might turn out to be an important step in easy, inexpensive SARS-CoV-2 testing, a new rapid diagnostic test for novel coronavirus infection that uses saliva samples was granted an emergency use authorisation by the U.S. Food and Drug Administration (FDA) on August 15. It was submitted for authorisation by the FDA on July 14. The test uses a new method of processing saliva samples for testing coronavirus infection. The test, called SalivaDirect, has high sensitivity, according to a preprint posted on medRxiv on August 4. According to the preprint, SalivaDirect test can detect when the number of virus copies in the saliva sample is as low as six-12 copies per microlitre. In contrast, testing nasopharyngeal swabs leads to false negative test results due to errors at the time of sample collection. The sensitivity was about 93%. Official data shows 88-94% [sensitivity]. If you assume 90% sensitivity, this is the best accuracy (sensitivity) of any saliva test, Andy Slavitt, a former acting administrator of the Centers for Medicare and Medicaid Services in the Obama administration tweeted. Collecting and testing saliva samples three steps collecting saliva without preservative buffers, proteinase K treatment and heat inactivation, and dualplex RT-qPCR virus detection.
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