Even if they dont they should have medical records of blood tests at some time prior...
Those clean results should work just as well to show the differences after...
a certain blood test before taking the COVID vaccine to see if you are likely to have adverse reactions....
You might be thinking of the antibody test. Your doctors office can draw the blood and send it off to a lab to check for antibodies.
If you get the vaccine on top of existing antibodies it is speculated your immune system could attack it. I would consider that an adverse reacton.
D-dimer?
D-Dimer, if taken soon after injection, shows clotting. The doctor who tested his patients within a week of vaccination said about 65% had elevated D-Dimer levels.
As the clots ‘age’ the D-dimer levels fall. I don’t know how long after injection the D-dimer would be accurate in reflecting clotting.
Basically if you have been exposed to the virus before you are more prone to having side effects from the current vaccines (which you would not need anyhow). Sen. Rand Paul has discussed this issue on occasion. He’s a doctor and would be one to know.
T-detect will tell you if you were exposed. This test was given EUA in March of this year.
I had the virus but am considering getting vaccinated when the Novavax vaccine comes on the market, hopefully the last quarter of this year. It uses the same technology used to produce flu vaccines and has the best safety profile of all vaccines including adenovirus and mRNA vaccines.
Since Novavax is a traditional vaccine similar to those used for many years, and contains no mRNA, it seems to be the best one to spike up my natural immunity even more.
Do you have blood? you will have a negative reaction, eventually.
Are you referring to the test for certain genetic tracers in the endocrine system? If so, I read the same article. It tied the probability of an adverse reaction to the COVID jab to people who carried certain genes related to their lymphatic systems. Interesting article.