Biochemistry reference ranges

Below are the CHL reference intervals for routine biochemistry.¹ Only the adult reference ranges are here (because the author has no interest in paediatrics); notwithstanding, your helpful laboratory staff would be able to provide you with them.

Alanine aminotransferase (ALT)

• Male: 0 - 40 U/L
• Female: 0 - 30 U/L

Albumin

• 32 - 48 g/L

Alkaline phosphatase (ALP)

• 30 - 150 U/L

Ammonia

• 11 - 32 µmol/L

Amylase (Total)

• < 100 U/L

Anion gap

• 10 - 20 mmol/L

Aspartate aminotransferase (AST)

• 10 - 50 U/L

β-hydroxybutrate

• < 0.3 mmol/L

Bicarbonate

• 22 - 32 mmol/L

Bile acids (non-fasting)

• < 15 µmol/L

Bilirubin

• 2 - 20 µmol/L

Calcium

• 2.2 - 2.6 mmol/L

Ionised calcium, serum pH 7.4

• 1.13 - 1.26 mmol/L

Chloride

• 95 - 110 mmol/L

Creatinine

• Male: 50 - 110 µmol/L
• Female: 45 - 90 µmol/L

Creatine Kinase (CK)

• Male: 60 - 220 U/L
• Female: 30 - 180 U/L

C-Reactive Protein (CRP)

• < 5 mg/L

eGFR

• 80 - 120 ml/min/1.73²

Gamma glutamyl transferase (GGT)

• Male: 10 - 50 U/L
• Female: 10 - 35 U/L

Glucose

• Random: 3.5 - 7.7 mmol/L
• Fasting: 3.5 - 6 mmol/L

Lactate

• 0.5 - 2 mmol/L

Lactate Dehydrogenase (LD)

• 110 - 220 U/L

Lipase

• 10 - 60 U/L

Magnesium

• 0.6 - 1.2 mmol/L

Osmolality

• 280 - 300 mmol/kg

Phosphate

• 0.8 - 1.5 mmol/L

Potassium

• 3.5 - 5.2 mmol/L

Sodium

• 135 - 145 mmol/L

Total Protein

• 64 - 83 g/L

Urate (Uric Acid)

• Male: 0.2 - 0.42 mmol/L
• Female: 0.15 - 0.36 mmol/L

Urea

• 3.2 - 7.7 mmol/L

Footnotes

1. Canterbury Health Laboratories. Core Biochemistry Reference Intervals. CHL; 2023. ↩