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Phosphate

Serum Phosphate PO4 Inorganic Phosphate
Serum (SST, fasting preferred) mmol/L

About this test

Essential for energy metabolism (ATP), bone mineralisation, and cellular function.

Reference Ranges

Sex Age Range Notes
All ≥ 18 yrs 0.8 – 1.5 Adult; higher in children

Clinical Interpretation

Low / Decreased
Hypophosphataemia — vitamin D deficiency, hyperparathyroidism, refeeding syndrome, malabsorption, Fanconi syndrome.
High / Increased
Hyperphosphataemia — CKD (most common), hypoparathyroidism, rhabdomyolysis, vitamin D toxicity.
Specimen
Serum (SST, fasting preferred)
Reporting Unit
mmol/L
Category
🧪 Clinical Biochemistry

⚠ Clinical Note
Reference ranges are indicative. Always interpret results in the context of the individual patient and local laboratory reference intervals, which may vary.