It makes sense many doctors, especially general practitioners, would forget or not know about the Vitamin D/Calcium link. However, wouldn't a doctor prescribing

It makes sense many doctors, especially general practitioners, would forget or not know about the Vitamin D/Calcium link. However, wouldn't a doctor prescribing a large dose of Vitamin D take at least yearly standard set of blood tests too that would include calcium levels? Then again, that's assuming there's a fairly standard set of blood tests to check for imbalances of this kind. Also, it seems odd there isn't a standard procedure for prescribing Vit D that included "check calcium levels".