Quote Originally Posted by HRTstudent View Post
Why magnesium serum and not RBC?

I would add a ferritin as well. Iron is important for women and those who are not menopausal are losing significant blood each month, which is a leading cause of low iron.

And to clarify, "Dehydroepiandrosterone Sulfate (DHEA)" should actually be Dehydroepiandrosterone Sulfate (DHEA-s) or Dehydroepiandrosterone Sulfate (DHEA sulfate)... you don't want the standard DHEA test as the number is too variable throughout the day to be clinically useful in most cases.
The RBC will be in the CBC w/diff assay, but maybe that wasn't your exact question? Agree totally with the ferritin to be included with the TIBC.