Phosphate, 24-Hour Urine

Test Code

UPHO

Includes

CPT code 81050 may be added at an additional charge for volume measurement

Preferred Specimen

50 mL urine aliquot from a well-mixed, 24-hour urine collection

Minimum Volume

5 mL

Other Acceptable Specimens

None

Instructions

Specify 24-hour total volume and collection duration on container and test requisition.

Transport Container

Plastic urine container

Transport Temperature

Preserved: Room temperature
Unpreserved: Refrigerated (cold packs)

Specimen Stability

Room temperature: 7 days
Refrigerated: 7 days

Methodology
Spectrophotometry (SP)

Setup Schedule

24/7

Report Available

Same day

Reference Range

0.4-1.3 g/24 h

Clinical Significance

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.

The CPT Codes provided in this document 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 payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.