Social media users have claimed that nasal swabs used in COVID-19 tests contain lithium. However, there is no evidence to back that up, and the U.S. Food and Drug Administration (FDA) has denied it ...
Nose swabs for rapid COVID-19 tests didn't pick up Omicron in the early stage of infection, a small study found. The study, which isn't published, suggests that with Omicron, virus particles peak ...
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