Myth: rapid antigen tests have a random chance to throw false negatives, so retesting a few times on the same day is sufficient to rule out covid
Fact: RATs are very good at detecting SARSCoV2 *at their specific detection threshold,* which is in the millions of viral copies, and it takes time for the viral load in the nasopharynx to hit this threshold -- up to a week into symptoms in many cases. You should treat every symptomatic infection you have as if it could be covid until you are testing "negative" (read: inconclusive) on RATs in *multiple 48 hour intervals,* and even *then* you should be wary
Myth: not testing positive means you aren't contagious
Fact: people are contagious at lower viral loads than RATs can detect
References:
1. FDA - Understanding At-Home OTC COVID-19 Antigen Diagnostic Test Results: https://www.fda.gov/medical-devices/coronavirus-covid-19-and-medical-devices/understanding-home-otc-covid-19-antigen-diagnostic-test-results
2. Leopold Schabel/Lucentia - Unofficial PlusLife FAQ: https://virus.sucks/pluslife_en/
