When is somebody going to nail the Biden administration on this fact?
There is no upfront test that immediately identifies the variant on the spot. So you’re not a complete liar/ignoramus.
However, there are tests that are performed on blood samples from representative COVID infectees that reveal the viral genome sequence which determines the variant involved. This allows the CDC to draw conclusions about prevalence and regionality of the various strains of COVID, and also allows them to note which symptoms differ between strains.
But that doesn’t excite people into making wild claims, so I’m not sure how likely you will be to update your postings.