@edb1123 An antibody test was run a month after my first Pfizer dose (at Mayo) and we were all elated to see that I had what the doctor’s (transplant, neurologist and allergist) felt was a high score, considering I’m still on .5mg of tacrolimus daily.

So there is optimism that I will have at least some and hopefully a good level of immunity with this second dose.
There’s no reason not to have the test run and it can be added to your monthly blood work...or whatever schedule you’re on now. You’re curious and would like to know. That makes it justifiable. 😉 My insurance paid but I would have had it anyway and I believe it was $84.00.

It may not tell you the level but it will show that you’ve had an immune response which is important. Some people show nothing but there are other factors involved such as our T and B cell response. However, my 3 doctors felt that the fact that there was a high spike protein count that it’s looking favorable.