Blood Tests for UC and Crohn's

Well, I got those Prometheus lab results back and boy were they interesting. They were positive for Crohn's disease.  I know these aren't terribly accurate, but nevertheless, I wanted to hear about others experience with such tests. My ASCA IgG was three times the cut off value. My doctor said I have diverticular colitis. I think I had colitis which caused constipation and then got the diverticular disease from all the constipation I had the past few years. It took a while for the colazal to work but things are going good for me right now (knock on wood.) Anybody else have experience with these tests? I'd love to hear about them. Thanks!

Mine came back extremely positive for UC but scope biopsies have been far less definite, with cross-over signs like princesa reports. Though it doesn't have a big impact on what therapies to use, it could be very important to know for sure if it comes to surgery- if one knew it was probably Crohn's Colitis and not UC, then one would opt for a permanent ileo rather than a j-pouch, to preserve the maximum amount of small gut in case it later spreads. It seems the wonderful, wacky world of auto-immunity often only spreads crohn's colitis into the small gut when there is no more convenient target (ie colon) to attack- you gotta love this DD. Anyway, the Prometheus IBD-7 test seems to have an EXTREMELY bad reputation amongst GI docs. I was surprised my insurance covered most of it- they turned down payment for the Remicade antibody test , also by Prometheus, on account of the test being considered "experimental."