Phosphorus is present in many foods with a 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.
Refrigerate during and after collection. Collect urine with 25 mL of
6N HCL to maintain a pH < 3. Do not include first morning specimen;
collect all subsequent voidings. The last sample collected should be
the first morning specimen voided the following morning at the same
time as the previous morning's first voiding. Specify 24-hour total
volume on container and test requisition.
Reported (Analytical Time)
The CPT codes provided are based on AMA guidelines and are for informational purposes only.
CPT coding is the sole responsibility of the billing party.
Please direct any questions regarding coding to the payer being billed.
Transport Temperature: Preserved: Room temperature Unpreserved: Refrigerated Methodology: Spectrophotometry Also availible Phosphorus Urine Random, #5308UR. Specimen Requirements: Preferred: 10 mL (2mL minimum) urine aliquot from a well mixed 24 hour collection collected in a plastic urine container Acceptable: Urine aliquot from a 24 hour collection in a urinalysis transport tube (yellow-top, blue fill line, preservative tube)