Background... DS has been pumping for 2.5 years now. He has a very high isf so tends to use very small amounts of insulin, basal is around 3u and bolus depending on day between 4-8...8 is only when really hungry. Before pumping he was started on Novarapid (Novalog) then switch to Humalog when he went on diluted insulin. We were told that when he started pumping we should use Novarapid, because humalog in small doses could crystalize in the tubing. But I really liked humalog, not sure if it was because it was diluted but he seems to come down nicer with it when we used it. So I am just wondering how many people use humalog in there pumps?? We are having a hard time getting his a1c down. I know it is due in part to the fact that he is growing and still honeymooning, and his high ISF, but I have always found that Novarapid cause very fast crashes him is BG and I am starting to think we should give Humalog a chance.