There are NONE! As of April 20, 2021 there are NO rapid antigen tests that use a saliva sample approved or authorized (there is a difference) by HC, the FDA or CE that are as accurate as AcuVid or that are in widespread use.
Almost all (and there are less than 10 that I can find) covid antigen tests using saliva as a sample need to be collected and are sent away. Therefore they are not rapid and occupy a very narrow niche. Of the remaining few their level of accuracy is such that while available in Europe they are not being used.
So for all those suddenly touting the competition you're speaking out of your behinds. At least be genuine enough to admit you were caught with your pants down, you now know that AcuVid is a potentially game changing device ....and you want to get in cheaper. I understand that but STOP being disingenuous ....even in your anonymity you're embarrassing yourselves .....and you're adding NOTHINGBvaluable or reliable to this board.
GLTE ....sensible enough to hold long.
By the way, Morningstar's 1-star speculative valuation on more solid revenue generating news is $3.66 .....let's go THRM.