Table 1. Open in new tab Laboratory...

	Reference Range	Age
Serum
Calcium, mmol/L	2.20–2.65	2.57	1.90	1.92	2.40	1.80	2.31	2.45
Phosphate, mmol/L	1.00–1.80	1.99^a	2.23	2.20	1.99	2.44	1.80	1.91
Magnesium, mmol/L	0.7–1.05	0.78		0.82
Albumin, g/L	35–50		42	44
Alkaline phosphatase, IU/L	0–500	131	270	232	219	280	191	198
PTH, pmol/L	1.6–7.2	5.6	50	67	53	61	37	16.5
TSH, mU/L	0.35–4.95		2.5			2.5
Calcitonin, ng/L	<4.8		4.3
Creatinine, μmol/L		30	52	52
25-hydroxyvitamin D, nmol/L	50–185		27	60	54	48	33	60
1,25-dihydroxyvitamin D, pmol/L	43–168			162			126
Urine
Creatinine, mmol/L	5.0–15.0		15.4	7.0	16.0	11.2	15.5	22.4
Calcium, mmol/L	2.5–7.5		<0.5	<0.5	<0.5	<0.5	<0.5	<0.5
Calcium/creatinine ratio
Phosphate, mmol/L	15 − 50		22	12	25		17	32
TRP, %^b			96.7	96.0
Medication
Calcium carbonate, mg			500 t.i.d.	500 t.i.d.	500 t.i.d.	Noncompliant
Vitamin D3, IU			400 t.i.d. (2 wk), 25 000/wk (6 wk)
Alfacalcidol, μg				0.5 b.i.d.	0.5 b.i.d.	1.0 b.i.d.	1.0 b.i.d.	1.0 b.i.d.

Reference Range

Age

6 mo

10.1 y

10.5 y

10.8 y

11.8 y

12.3 y

12.5 y

Serum

Calcium, mmol/L

2.20–2.65

2.57

1.90

1.92

2.40

1.80

2.31

2.45

Phosphate, mmol/L

1.00–1.80

1.99^a

2.23

2.20

1.99

2.44

1.80

1.91

Magnesium, mmol/L

0.7–1.05

0.78

0.82

Albumin, g/L

35–50

Alkaline phosphatase, IU/L

0–500

131

270

232

219

280

191

198

PTH, pmol/L

1.6–7.2

5.6

16.5

TSH, mU/L

0.35–4.95

2.5

Calcitonin, ng/L

<4.8

4.3

Creatinine, μmol/L

25-hydroxyvitamin D, nmol/L

50–185

1,25-dihydroxyvitamin D, pmol/L

43–168

162

126

Urine

Creatinine, mmol/L

5.0–15.0

15.4

7.0

16.0

11.2

15.5

22.4

Calcium, mmol/L

2.5–7.5

<0.5

Calcium/creatinine ratio

Phosphate, mmol/L

15 − 50

TRP, %^b

96.7

96.0

Medication

Calcium carbonate, mg

500 t.i.d.

Noncompliant

Vitamin D3, IU

400 t.i.d. (2 wk), 25 000/wk (6 wk)

Alfacalcidol, μg

0.5 b.i.d.

1.0 b.i.d.

	Reference Range	Age
Serum
Calcium, mmol/L	2.20–2.65	2.57	1.90	1.92	2.40	1.80	2.31	2.45
Phosphate, mmol/L	1.00–1.80	1.99^a	2.23	2.20	1.99	2.44	1.80	1.91
Magnesium, mmol/L	0.7–1.05	0.78		0.82
Albumin, g/L	35–50		42	44
Alkaline phosphatase, IU/L	0–500	131	270	232	219	280	191	198
PTH, pmol/L	1.6–7.2	5.6	50	67	53	61	37	16.5
TSH, mU/L	0.35–4.95		2.5			2.5
Calcitonin, ng/L	<4.8		4.3
Creatinine, μmol/L		30	52	52
25-hydroxyvitamin D, nmol/L	50–185		27	60	54	48	33	60
1,25-dihydroxyvitamin D, pmol/L	43–168			162			126
Urine
Creatinine, mmol/L	5.0–15.0		15.4	7.0	16.0	11.2	15.5	22.4
Calcium, mmol/L	2.5–7.5		<0.5	<0.5	<0.5	<0.5	<0.5	<0.5
Calcium/creatinine ratio
Phosphate, mmol/L	15 − 50		22	12	25		17	32
TRP, %^b			96.7	96.0
Medication
Calcium carbonate, mg			500 t.i.d.	500 t.i.d.	500 t.i.d.	Noncompliant
Vitamin D3, IU			400 t.i.d. (2 wk), 25 000/wk (6 wk)
Alfacalcidol, μg				0.5 b.i.d.	0.5 b.i.d.	1.0 b.i.d.	1.0 b.i.d.	1.0 b.i.d.

Table 1.

Open in new tab

Laboratory Results

	Reference Range	Age
	Reference Range	6 mo	10.1 y	10.5 y	10.8 y	11.8 y	12.3 y	12.5 y
Serum
Calcium, mmol/L	2.20–2.65	2.57	1.90	1.92	2.40	1.80	2.31	2.45
Phosphate, mmol/L	1.00–1.80	1.99^a	2.23	2.20	1.99	2.44	1.80	1.91
Magnesium, mmol/L	0.7–1.05	0.78		0.82
Albumin, g/L	35–50		42	44
Alkaline phosphatase, IU/L	0–500	131	270	232	219	280	191	198
PTH, pmol/L	1.6–7.2	5.6	50	67	53	61	37	16.5
TSH, mU/L	0.35–4.95		2.5			2.5
Calcitonin, ng/L	<4.8		4.3
Creatinine, μmol/L		30	52	52
25-hydroxyvitamin D, nmol/L	50–185		27	60	54	48	33	60
1,25-dihydroxyvitamin D, pmol/L	43–168			162			126
Urine
Creatinine, mmol/L	5.0–15.0		15.4	7.0	16.0	11.2	15.5	22.4
Calcium, mmol/L	2.5–7.5		<0.5	<0.5	<0.5	<0.5	<0.5	<0.5
Calcium/creatinine ratio
Phosphate, mmol/L	15 − 50		22	12	25		17	32
TRP, %^b			96.7	96.0
Medication
Calcium carbonate, mg			500 t.i.d.	500 t.i.d.	500 t.i.d.	Noncompliant
Vitamin D3, IU			400 t.i.d. (2 wk), 25 000/wk (6 wk)
Alfacalcidol, μg				0.5 b.i.d.	0.5 b.i.d.	1.0 b.i.d.	1.0 b.i.d.	1.0 b.i.d.

	Reference Range	Age
	Reference Range	6 mo	10.1 y	10.5 y	10.8 y	11.8 y	12.3 y	12.5 y
Serum
Calcium, mmol/L	2.20–2.65	2.57	1.90	1.92	2.40	1.80	2.31	2.45
Phosphate, mmol/L	1.00–1.80	1.99^a	2.23	2.20	1.99	2.44	1.80	1.91
Magnesium, mmol/L	0.7–1.05	0.78		0.82
Albumin, g/L	35–50		42	44
Alkaline phosphatase, IU/L	0–500	131	270	232	219	280	191	198
PTH, pmol/L	1.6–7.2	5.6	50	67	53	61	37	16.5
TSH, mU/L	0.35–4.95		2.5			2.5
Calcitonin, ng/L	<4.8		4.3
Creatinine, μmol/L		30	52	52
25-hydroxyvitamin D, nmol/L	50–185		27	60	54	48	33	60
1,25-dihydroxyvitamin D, pmol/L	43–168			162			126
Urine
Creatinine, mmol/L	5.0–15.0		15.4	7.0	16.0	11.2	15.5	22.4
Calcium, mmol/L	2.5–7.5		<0.5	<0.5	<0.5	<0.5	<0.5	<0.5
Calcium/creatinine ratio
Phosphate, mmol/L	15 − 50		22	12	25		17	32
TRP, %^b			96.7	96.0
Medication
Calcium carbonate, mg			500 t.i.d.	500 t.i.d.	500 t.i.d.	Noncompliant
Vitamin D3, IU			400 t.i.d. (2 wk), 25 000/wk (6 wk)
Alfacalcidol, μg				0.5 b.i.d.	0.5 b.i.d.	1.0 b.i.d.	1.0 b.i.d.	1.0 b.i.d.

Abbreviations: b.i.d., twice daily; t.i.d., three times daily.

Reference range for ages 0.5–3.0 years: 1.20–2.10 mmol/L.

%TRP indicates percentage of filtered phosphate that is reabsorbed by renal tubules.

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