> The Math Behind False Positives and False Negatives. What are sensitivity and specificity, anyway? https://slate.com/technology/2022/01/rapid-testing-covid-math-false-negatives-sensitivity.html

TL;DR: Current #COVID19 rapid test technology results in zero false positives, but do have some problems with false negatives. The false negative rate depends on the variant, so there is no one answer. Plus, at this time we don't know the false negative rate for the Omicron variant.