Phosphorus, Urine

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

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Synonym/Acronym:
Urine phosphate.

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

Patient Preparation
There are no food, fluid, activity, or medication restrictions unless by medical direction. Usually, a 24-hr urine collection is ordered. As appropriate, provide the required urine collection container and specimen collection instructions.

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

Critical Findings and Potential Interventions
N/A

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Synonym/Acronym:
Urine phosphate.

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

Patient Preparation
There are no food, fluid, activity, or medication restrictions unless by medical direction. Usually, a 24-hr urine collection is ordered. As appropriate, provide the required urine collection container and specimen collection instructions.

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

Critical Findings and Potential Interventions
N/A

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