Overview

Paediatric reference values


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Determination Sample Reference range

Alkaline phosphatase P

<1 year 30–250 IU/l

1–14 years 150–570 IU/l

>14 years 80–250 IU/l

Ammonia P

Newborn 64–107μmol/1

0–2 weeks 56–92μmol/1

>1 month 21–50μmol/1

Aspartate aminotransferase P

1–3 years 20–60 IU/l

4–6 years 15–50 IU/l

Bicarbonate P

Infants 18–22 mmol/l

Older children 20–26 mmol/l

Bilirubin P

First week of life 100–200μmol/1 (total)

After first week of life 2–14μmol/1 (total)

And throughout childhood 0–0.4μmol/1 (direct)

Calcium P

1– weeks 1.9–2.85 mmol/l

3 weeks and above 2.12–2.65 mmol/l

β-Carotene S

<1 year (upper limit falls with age up to 3½ years) 1.3–6.3μmol/1

3½ years onwards 1.9–2.8μmol/1

Creatinine P

Cord blood 57–100μmol/1

2 weeks-6 years 33–61μmol/1

6 years-10 years 39–70μmol/1

>12 years 49–81μmol/1

Creatinine clearance P

3–13 years 94–142 ml/min per 1.73m2

Creatine kinase (CK) P

Neonates 75–400 U/l

Infants 3–12 months 10–145 U/l

Children 1–15 years 15–130 U/l

Gamma-glutamyl transferase (GGT) P

0–1 month 12–271 U/l

1–2 months 9–159 U/l

2–4 months 7–98 U/l

4–7 months 5–45 U/l

7–12 months 4–27 U/l

1–15 years 3–30 U/l

Glucose (fasting) S

Cord 2.5–5.3 mmol/l

Premature/low birth wt 1.1–3.3 mmol/l

Neonates 1.67–3.3 mmol/l

1 day 2.2–3.3 mmol/l

1–7 days 2.8–4.6 mmol/l

>7 days 3.3–5.5 mmol/l

Total protein P

1st month 51 g/l (mean)

1st year 61 g/l (mean)

1–6 years 61–78 g/l

7–16 years 66–82 g/l

Immunoglobulins

IgG S

Cord 5.2–18.0 g/l

0–2 weeks 5.0–17.0 g/l

2–6 weeks 3.9–13.0 g/l

6–12 weeks 2.1–7.7 g/l

3–6 months 2.4–8.8 g/l

6–9 months 3.0–9.0 g/l

9–12 months 3.0–10.9 g/l

1–2 years 3.1–13.8 g/l

2–3 years 3.7–15.8 g/l

3–6 years 4.9–16.1 g/l

6–9 years 5.4–16.1 g/l

9–12 years 5.4–16.1 g/l

12–15 years 5.4–16.1 g/l

IgA S

Cord 0.00–0.02 g/l

0–2 weeks 0.01–0.08 g/l

2–6 weeks 0.02–0.15 g/l

6–12 weeks 0.05–0.4 g/l

3–6 months 0.1–0.5 g/l

6–9 months 0.15–0.7 g/l

9–12 months 0.20–0.7 g/l

1–2 years 0.3–1.2 g/l

2–3 years 0.3–1.3 g/l

3–6 years 0.4–2.0 g/l

6–9 years 0.5–2.4 g/l

9–12 years 0.8–2.8 g/l

12–15 years 0.8–2.8 g/l

IgM S

Cord 0.02–0.2 g/l

0–2 weeks 0.05–0.2 g/l

2–6 weeks 0.08–0.4 g/l

6–12 weeks 0.15–0.7 g/l

3–6 months 0.20–1.0 g/l

6–9 months 0.40–1.6 g/l

9–12 months 0.60–2.1 g/l

1–2 years 0.50–2.2 g/l

2–3 years 0.50–2.2 g/l

3– years 0.50–2.0 g/l

6–9 years 0.50–1.8 g/l

9–12 years 0.50–1.9 g/l

12–15 years 0.50–1.9 g/l

Lactate P (venous) 0.5–2.2 mmol/l

P (arterial) 0.5–1.6 mmol/l

B 0.5–1.7 mmol/l

Phosphate (inorganic) P

Newborn 1.20–2.78 mmol/l

Young children 1.29–1.78 mmol/l

Girls 15 years 0.9–1.38 mmol/l

Boys 17 years 0.83–1.49 mmol/l

(from 7 years levels fall steadily to reach adult levels at

15–17 years)

Potassium P

Newborn up to 6.6 mmol/l

>1 month-6 years 4.1–5.6 mmol/l

Boys 7–16 years 3.3–4.7 mmol/l

Girls 7–16 years 3.4–4.5 mmol/l

Sweat sodium 10–40 mmol/l

Sweat chloride 0–50 mmol/l

Thyroid-stimulating hormone (TSH) (outside neonatal period) S 0.5–5.0 mU/l

Uric acid P

Childhood 0.06–0.24 mmol/l

Boys 16 years 0.23–0.46 mmol/l

Girls 16 years 0.19–0.36 mmol/l

From Concise Medical Dictionary in Oxford Reference.

Subjects: Medicine and Health.



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