If anyone knows someone who's had the shot, those individuals can ask their doctors for a "peripheral blood smear," where they look at the cells directly. A D-Dimer test is easy to do as well, to see if you are at risk from clots. But that test is nonspecific and a high number may result in further testing, like CT scans with contrast.

Don't ignore your symptoms after (blindly) taking the C19 shot.

https://labtestsonline.org...

https://www.mayocliniclabs...

https://pubmed.ncbi.nlm.ni...