Phosphorus, Urine is a topic covered in the Davis's Lab & Diagnostic Tests.

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Urine phosphate.

Common Use:
To assist in evaluating calcium and phosphorus levels related to use of diuretics in progression of kidney disease.

Urine from an unpreserved random or timed specimen collected in a clean plastic collection container.

Normal Findings:
(Method: Spectrophotometry) Reference values are dependent on phosphorus and calcium intake. Phosphate excretion exhibits diurnal variation and is significantly higher at night.

Conventional UnitsSI Units (Conventional Units × 0.0323)
400–1,300 mg/24 hr12.9–42 mmol/24 hr

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