New York: According to a study, the saliva test for the detection of Kovid-19 outperforms the nasal and oral swab tests authorized by the US Food and Drug Administration (FDA).
The Rockefeller University study compared 162 individuals who received both a “DRUL” saliva test and a traditional swab test. The DRUL caught all cases in which the swabs were identified as positive – as well as four positive cases that the swabs completely missed.
“This research confirms that the test we developed is sensitive and safe,” said Robert B. Darnell, Professor and Head of the Laboratory of Molecular Neuro-Oncology.
“It is inexpensive, provides excellent surveillance within the Rockefeller community, and has the potential to improve safety in communities as the pandemic continues,” Darnell said.
The study, published in the journal PLOS ONE, states that the DRUL test offers several advantages. It is safe – a test that can be taken at home and sent to the laboratory in a transport medium that kills the virus on contact. It is efficient.
However, it is cheap, costing around $2 per test. (By comparison, Medicare is currently paying up to $100 for each commercial test performed.) But, comforting it, it was a simple matter of providing a sample of spitting up in a cup.
The researchers said data from this study, previously submitted to New York State as part of its approval process, showed that DRUL matches, and in most cases, better than widely used tests. Performs against which it was benchmarked.
The researchers first assessed the detection limit of DRUL — how many viral copies the test could hold per volume of fluid. The test was successful in detecting a single viral particle in a microliter of saliva, a figure comparable to that of the most sensitive assay. The lab then ran 30 nasal swabs for those who had tested positive for Covid-19 through its novel testing platform. DRUL caught all 30.
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