Phosphorus, Timed Urine


Abbrev Code:UPHOST   
Order Code:LAB426Order Name:Phosphorus Timed Urine
Synonyms:UPHOST
Methodology:Bichromatic endpoint
St. Johns/St Joseph/Woodwinds: Phosphomolybdate UV
CPT Codes: 84105 x1, 81050 x1
Test Includes:Phosphorus Urine mg/dL; Phosphorus Urine g/g Cr; Creatinine Urine mg/dL; Phosphorus Urine g/spec; Duration in hours, Volume in mL, Creatinine Urine Timed g/spec
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:7 days refrigerated; 6 months frozen
Test Performed at or Referral Lab Chemistry  (Range, UMMC-West Bank, UMMC-East Bank, Ridges, Southdale, St. Joseph's)


Interpretive

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


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