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Protein, Total, 24-Hour Urine
Test CodeUP24
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 collection - no preservative
Minimum Volume
5 mL
Other Acceptable Specimens
None
Instructions
Record total volume and duration of collection on test requisition and urine vial
Transport Container
Plastic urine container
Transport Temperature
Ambeint
Specimen Stability
Ambient: 24 hours
Refrigerated: 7 days
Refrigerated: 7 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Acidified urine
Methodology
Colorimetric (C) • Spectrophotometry (SP)
Setup Schedule
24/7
Report Available
Same day
Reference Range
<150 mg/24 h
Clinical Significance
Proteinuria, mainly glomerular, is often a manifestation of primary renal disease although transient proteinuria may occur with fevers, thyroid disorders, and in heart disease. In the absence of renal disease, the degree of proteinuria is slight, usually amounting to less than 2 grams per day. In chronic glomerulonephritis and in the nephrotic syndrome including lipoid nephrosis and in some forms of hypertensive vascular disease, protein loss may vary from a few grams to as much as 30 g/day.
