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. 2020 Aug 24;20:283. doi: 10.1186/s12876-020-01423-8

Table 3.

Vitamins and bone metabolism markers before starting supplementation of vitamin D

(normal range)
Vitamin A < 5 IU/dL 97–316
Vitamin K1 < 0.05 ng/mL 0.15–1.25
Vitamin K2 < 0.05 ng/mL < 0.1
Vitamin E 0.21 mg/dL 0.75–1.41
1,25(OH)2 Vitamin D 20.3 pg/mL 20.0–60.0
25(OH) Vitamin D3 < 5 pg/mL 7–41
Retinol binding protein 0.7 mg/dL 1.9–4.6
Vitamin B1 134 ng/mL 24–66
Vitamin B12 2320 pg/mL 180–914
Nicotinic acid 4.4 μg/mL 4.7–7.9
Folic acid 18.7 ng/mL > 4.0
TRACP-5b 1490 μU/mL 120–420
NTx 1285 nmolBCE/L 14.3–89.0
Bone type ALP 123 μg/L 3.8–22.6
Intact P1NP 181 μg/L 14.9–68.8
Osteocalcin 2.9 ng/mL 14.2–54.8
intact PTH 650 pg/mL 10–65
PTHrP < 1.1 pmol/L < 1.0
FGF23 Below the detection limit pg/mL 19.9–52.9
%TRP 87.8 % 81–90
TmP/GFR 1.414 mg/dL 2.0–3.4