From: Vitamin D in pediatric age: consensus of the Italian Pediatric Society and the Italian Society of Preventive and Social Pediatrics, jointly with the Italian Federation of Pediatricians
Severe deficiency
Deficiency
Insufficiency
Sufficiency
25(OH)D
< 10 ng/ml (< 25 nmol/l)
< 20 ng/ml (< 50 nmol/l)
20–29 ng/ml (50–74 nmol/l)
≥ 30 ng/ml (≥ 75 nmol/l)