Originally Posted by sd1974
If you have vitamin D result of 42, does it mean you are insufficient and need to bring your vit D levels up? What are the reference ranges?
You first need to know which Vitamin D test was used. The gold standard is 25-hydroxy Vitamin D (D3) or 25-hydroxycholecalciferol.
Any other test is not a good indicator of Vitamin D status.
A concentration above 15 ng/ml (37.5 nmol/L) is generally considered adequate for those in good health. Levels above 30 ng/ml (75 nmol/L) are proposed by some as desirable for achieving optimum health, but there is not yet enough evidence to support this.