Don't know but that is one of the reasons why I don't like my son being on too high a dose and why I am using suspension.  We had blood tests today, but he went and took his morning meds before I got up---LOL---typical!  (The test was for 9.30 am as it was and he got up at 7.30 and took his tablet!)  I am always breathing down his neck to remind him most days and then the day I want him to miss he is as keen as mustard! 

I give him 2 tablets with calcium and vit D (Vitamin D improves absorption of calcium) to be on the safe side spread out.  I try not to give them with the meds---say dinner time and morning and just as he leaves for school.  He gets 75mg calcium in each tablet and 25mg Vit D. 

What I did wonder though was whether his body would only absorb so much due to the fact that he is on corticosteroids.  There is a proven link to osteoprosis, but children with cah should not even be suffering such.  That is basically why these doctors need to get as near to the adequate dose needed as possible.  Calcium is leeched from the bones otherwise and you get bone loss.

Dr Songya Pang did put out the kind of basic standards for care information some time ago and there is a web site but I can't seem to find the addy in my favorites here.  I'll dig around and see if I can find it.  It states what the aims of care should be.

JH