Table 2.

Definition of vitamin d status based on serum vitamin levels [13, 14]

Values in nmol/ml	Values in ng/ml	Category
< 12	< 4.80	Serious deficiency
12–30	4.80–12	Deficiency
30–50	12–20	Insufficient
50–75	20–30	Probable insufficient
75–100	30–40	Sufficient optimal
100–150	40–60	Probable too high
150–375	60–150	Hypervitaminosis
> 375	> 150	Toxic level