Protein, Timed Urine


Abbrev Code:UTPT   
Order Code:LAB440Order Name:Protein Timed Urine
Synonyms:Urine Protein/Creatinine Ratio; Urine, Timed; 24 Hour Urine
Methodology:Roche: Colorimetric assay
Vista: Bichromatic endpoint
Architect: Benzalkonium chloride
CPT Codes: 84156 x1, 84156 x1, 81050 x1, 81050 x1
Test Includes:Total protein urine mg/L; total protein urine mg/spec, duration in hours, volume in mL
Turnaround Time:Performed and reported 24 hours/day.
Associated Links:

Urine Collection Procedure, Roche Go Live Schedule



Collection Instructions

Specimen:Urine, timed collection (20 to 28 hours). If using test to diagnose orthostatic proteinuria, collect two 12 hour collections: one DAY and one NIGHT and order UTPT/LAB440 twice
Optimal Volume:Submit entire collection; analysis requires 1 mL
Container:3 L plastic jug
Collection Instructions:Place specimen on ice or in refrigerator during collection.
Causes for Rejection:Specimen collected with acetic acid, thymol, or sodium fluoride preservative.


Processing and Shipping

Specimen Processing:If two or more containers are received, verify that they are for the same collection time before combining. Mix collection well before aliquot is taken. Aliquot 5 mL, 1 mL minimum. Store in refrigerator.
Shipping Instructions:Ship at refrigerated temperature.
Stability:1 day at room temperature; 7 days refrigerated; 1 month frozen
Test Performed at or Referral Lab Chemistry  (Grand Itasca, Northland, Range, Roche-CSC Mpls, Roche-Lakes, Roche-Ridges, Roche-St. John's, Roche-UMMC East, Southdale, UMMC/UMMCH-West Bank, Woodwinds)


Interpretive

Reference Range:Urine Chemistry Reference Ranges
Use:Quantitative evaluation of proteinuria; evaluate renal diseases, hypoproteinemia, monitor renal transplant.


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