That's interesting. I get my vitamin D levels tested b/c I have Crohn's disease and know they are low...didn't know it was linked to autism. It's just a blood test and then they will tell you to take Vitamin D supplements if it is low. It would make more sense to me if your dr would just recommend how much Vit D you should be taking. It's in most prenatal vitamins.
Re: Vitamin D testing