John,
I can make this a "POLL" thread if you like. Just let me know how you would like it worded and I can do it!!
I think it would be most interesting!!
For me, I am O+ and don't think I have ever had my levels checked in a flare. (My AS hides from my rheumy)

Come to think of it, my first visit was when I was flaring and I did have blood work. I will ask when I go to the Rheumy on August 28th.
Great thread!!!
Holly