Preferred Specimen(s) 2.0 mL hour urine
Transport Container Plastic leak proof container
Transport Temperature Refrigerated, stable 1 week
Reject Criteria Received at room temperature
Methodology Spectrophotometry
Clinical Significance Phosphorus is present in many foods witha mean intake of approximately 1500 mg per day for adult males and about 1000 mg per day for adult females. Absorbed phosphate, under the influence of parathyroid hormone is readily excreted in the kidney. Measurement of urinary phosphorus generally reflects dietary intake hence day to day excretion may show considerable variation.