BUN stands for blood urea nitrogen. Creatinine is a natural product of muscle breakdown that occurs at a low level in the body. Both BUN and creatinine are filtered by the kidney and excreted in urine. For this reason, BUN and creatinine are used ...
D-3 is the one you pay attention to, not D-2.
The correct test is 25(OH)D, also called 25-hydroxyvitamin
OPTIMAL - 25-Hydroxyvitamin D Values
50-70 ng/ml or
NORMAL - 25-Hydroxyvitamin D lab Values
50-140 nmol/l ...