The FDA granted its first emergency authorization for a rapid antibody blood test for COVID-19, developed by Cellex, allowing people to gauge a person’s immune response to the novel coronavirus.
The serological test—which uses a fingerprick of blood and a small strip, similar to a combination of a blood glucose test and a home pregnancy exam—detects two different types of antibodies produced by the body to fight off the infection. Available by prescription, this can be used to determine whether a person has been previously infected and possibly recovered.
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