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Protein, Total, with Creatinine, 24-Hour Urine
Test Code757
CPT Codes
82570, 84156
Includes
CPT code 81050 may be added at an additional charge for volume measurement
Preferred Specimen
10 mL 24-hour urine collected in a 24-hour urine container
Minimum Volume
2 mL
Instructions
Record 24-hour urine volume on test request form and urine vial
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 4 days
Refrigerated: 5 days
Frozen: 30 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Acidified urine
Methodology
Colorimetric (C) • Spectrophotometry (SP)
Setup Schedule
Night Sets up 6 days a week.
Report Available
Reports in 2 to 3 days.
Clinical Significance
Urinary total proteins are negligible in healthy individuals. Concentrations are increased in patients with a wide variety of disease that impair renal function including diabetes, hypertension, nephritic syndrome, and drug nephrotoxicity.