Table 1.

Characteristics and determinants of vitamin D or bone metabolism in blood serum with reference to the standard ranges valid in the laboratory at our hospital

Characteristic	Abbreviation	Normal range
25-hydroxyvitamin D	Vit. D	75–100 nmol/l
Calcium	Ca	2.20–2.65 mmol/l
Phosphate	Ph	0.78–1.53 mmol/l
Creatinine	Crea	57–113 μmol/l
Alkaline phosphatase	ALP	3–20.2 ng/ml
Parathyroid hormone	PTH	15–65 pg/ml