Sorry, smile1967. I'm not very well versed in blood markers for Crohn's. (Thanks njmom for the answers!) In fact, our team of pediatric GIs told us they do not like to rely on blood work for much with regard to IBD...
Also, with anemia, different labs "score" it differently (for lack of a better word) and give different results. Is it possible this would also hold true for SED rate tests?
That said, here's what we went through. My son was quite anemic for nearly two years as we tried to figure out what was going on (no IBD in the family). Ultimately, it was a high CRP (C-reactive protein, another inflammation marker) test that told us something was going on in addition to just the anemia. I know his SED rate was elevated at this time, too, but I can't remember what it was.
Following that blood work, he had a colonoscopy which gave the definitive diagnosis. Within a few months after his diagnosis, we finally beat the anemia. Exactly one year after his diagnosis, ALL of his blood work was completely normal (after about
9 months on the diet) and has been there since.
I take it your son is not anemic since you did not mention it. I wonder why he is pale with dark circles...? Sounds just like my son looked when he was anemic...
I would try what Keeper suggests. Try cutting out the starches and sugars. As soon as we did this, my son's horrific gas completely disappeared! He started taking a high-quality probiotic at that time as well, so perhaps they helped too. I hope this helps a tiny bit! I hope he feels better soon, too!