Table 1.

Changes in Laboratory References 1997 to 2016

	Years	References
S-calcium in adults	−2005	2.20–2.60 mmol/L
P-calcium in adults	2005−	2.15–2.50 mmol/L
S-calcium in children	−2003	1.80–2.80 mmol/L <7 d; 2.20–2.70 mmol/L 7 d to 7 y
	2003–2005	2.20–2.60 mmol/L
	2005−	2.00–3.00 mmol/L first day; 2.10–2.60 mmol/L d 2 to 12 mo
S-ionized calcium in adults	−2005	1.17–1.29 mmol/L
	2005−	1.15–1.33 mmol/L
P-PTH	−1999	12–72 ng/L
	1999–2015	10–65 ng/L = 1.1–6.9 pmol/L
	2015−	1.1–6.0 pmol/L
S-25 OHD vitamin	−2006	10–50 μg/L
	2009−	75–250 nmol/L
S-1,25 OHD vitamin	1995–2015	10–60 ng/L
	2015−	60–208 pmol/L
Urinary calcium/24 h	1995−	0.7–7.0 mmol/24 h

Minus sign before a year indicates ongoing from previous years. Minus sign after a year indicates still ongoing.