COVID Antibody Load Blood Test

I have been lucky enough to come down with urticaria 3 weeks ago and suspect it could be related to my recentish covid booster as my experience matches several others I have been in touch with who have this diagnosis confirmed.

BLUF: Is there a Quest blood test which anyone has used which can give me antibody levels? Is this the correct type of test I should pursue?

I posit that my overactive immune response would make the covid antibody level much higher than the general population and that as my symptoms improve, that this level would decrease.