Phosphorus, Timed Urine

Sunquest Code:UPHOST  
Epic Code:LAB426Epic Name:Phosphorus Timed Urine
Order Instructions:Order UCRT in addition to UPHOST. Enter collection volume and duration.
Methodology:Bichromatic end point
Test Includes:Urine phosphorus and creatinine.
Turnaround Time:Performed and reported 24 hours/day.
Associated Links:

Urine Collection Procedure

Collection Instructions

Specimen:Urine, timed collection (20-28 hours)
Optimal Volume:Submit entire collection; analysis requires 1 mL
Container:3 L plastic jug
Collection Instructions:Collection of 24 hour urine specimen should be made in a container with 10-20 mL of 6M HCl. Container without preservatives is acceptable. See processing note below.

Processing and Shipping

Specimen Processing:Mix collection well before aliquot is taken. Aliquot 5 mL, 1 mL minimum. If preservatives are not used during 24 hour urine collection; acidify the sample to below 3.0 pH before analysis. Store in refrigerator.
Shipping Instructions:Ship at refrigerated temperature.
Stability:Refrigerated - 7 days; frozen - 6 months.
Test Performed at or Referral Lab Chemistry  (Fairview Range - FRMC, UMMC-West Bank, UMMC-East Bank, Fairview Ridges - FRH, Fairview Southdale - FSH)


Reference Range:0.4-1.3 g/24 hours. Reference values vary with diet.
Use:Evaluate phosphorus metabolism.

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