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Table 1 Definitions of vitamin D status[18]–[24]

From: Prevalence and risk factors of vitamin D deficiency in inherited ichthyosis: A French prospective observational study performed in a reference center

VitD status

25(OH)D status(ng/ml)

Optimal

x ≥ 30

Sufficiency

20 ≤ x < 30

Insufficiency

10 ≤ x < 20

Deficiency

x < 10