Mess
Global Moderator
But there are 40 mutations of this virus Mess. How do you know you have Covid19 from a 5min test as they are saying in the US or 1hr test? If you can shed some light how to scientifically test for the common cold and variations down to isolating this particular mutating strain into 5min or 1hr test, please tell me.
Saliva and Mucus is fine, in a lab. I have no issues with this but I saw something on TV where they said 80% of the Chinese test kits were false positives. I mean, is this for real?
I'm no scientist, but I view these 15 minute result Coronavirus test similar to say an off the shelf pregnancy test concept that shows home results in a short time, except the body fluid being analyzed is salivia instead of urine. Clearly there are reactants that when they come in contract with the desired ensign or (whatever you prefer to call it) within a body fluid which are able to detect it.
Similarly how a road side breathalyzer test can test by police for the existence of alcohol/drugs in saliva etc and then when that test positive they would then do more detail tests to determine the levels of those.
Even from high school chemistry we know a simple litmus test paper can change colour based on what fluid it comes in contact with. Same principle here when checking for something that can be found and analyzed in saliva.
PS. False positives while undesirable when accuracy is the key, they are also not dangerous and in fact preferable because that means you're not sick with the coronavirus. However a simple answer/guess for false positives is that there could be numerous things found in a body fluid that would register similarly when tested for.
ie If I ate a orange or sucked a lemon and did a litmus test for acidic acid, both would show positive but if I only wanted to know who ate an orange, I would get false positives also because of other things that could cause the same result. If you did get a positive you would then likely then do further more in-depth testing like blood etc.
Last edited: