Back in September of last year I had some blood tests done. One of them was for Vit. D. My result for the Vit. D. test was as follow
VITAMIN D, 25-HYDROXY
Vitamin D, 25-OH, Tot - 69 (range 20-100) ng/mL
Vitamin D, 25-OH, D3 65 ng/mL
Vitamin D, 25-OH, D2 4 ng/mL
Therapy is based on measurement of Total 25-OHD, with levels <20 ng/mL indicative of Vitamin D deficiency while levels between 20 ng/mL and 30 ng/mL suggest insufficiency. Optimal levels are >30 ng/mL.
Question: If optimal levels are ''30 ng/mL'' how come my doc told me my test was normal. Yes, the normal range is noted as being in the range of 20-100, but if THAT'S THE CASE - why are ''optimal levels'' at 30 ng/mL?
Thanks to anyone who can straighten this out for me