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Table 1 The fat-soluble vitamin-level reference value [15]

From: Fat soluble vitamin levels in children with newly diagnosed celiac disease, a case control study

Vitamin D (ng/mL) Deficiency < 20
Insufficiency < 30
Vitamin A (ng/mL) 1–6 age 2–4,3
7–12 age 2,6–4,9
13–19 age 2,6–7,2
Vitamin E (mcg/mL) 1–12 age 3–9
13–19 age 6–10
Vitamin K1 (pg/ml)   100–2200