Above the range
Common causes of a high Phosphate (Phosphorus)
- Renal failure
- Hypoparathyroidism
- Tumor lysis syndrome
- Excess vitamin D
Looking for the other direction? See what causes a low Phosphate (Phosphorus).
All tests · Electrolytes & Minerals · Phosphate (Phosphorus)
Above the range
What causes a high Phosphate (Phosphorus)?
Normal range 2.5-4.5 mg/dL (0.81-1.45 mmol/L SI). Specimen: Serum. See the full Phosphate (Phosphorus) reference page for critical values and nursing considerations.
What is the normal range for Phosphate (Phosphorus)?
The standard teaching reference range for Phosphate (Phosphorus) is 2.5-4.5 mg/dL in conventional units, or 0.81-1.45 mmol/L in SI units. This value is measured in serum.
| Specimen | Serum |
|---|---|
| Conventional range | 2.5-4.5 mg/dL |
| SI range | 0.81-1.45 mmol/L |
| Critical value | < 1.0 mg/dL |
| Panel | Electrolytes & Minerals |
Full details, including nursing considerations, on the Phosphate (Phosphorus) normal range page. Reference ranges vary by laboratory, method, age, sex, and population - always use the range printed on the actual result.
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