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Protein, 24 Hour Urine (w/o CREAT)
Test CodeUPRO24Q
Quest Code
3536
CPT Codes
84156
Includes
CPT code 81050 may be added at an additional charge for volume measurement
Preferred Specimen
10 mL aliquot of an unpreserved 24-hour urine, submitted in a plastic, leak-proof container
Minimum Volume
2 mL
Instructions
Collect without preservative. Please specify the total 24-hour urine volume on the request form and on the container.
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 4 days
Refrigerated: 5 days
Frozen: 30 days
Refrigerated: 5 days
Frozen: 30 days
Methodology
Colorimetric (C) • Spectrophotometry (SP)
Setup Schedule
Set up: Daily; Report available: Next day
Limitations
Requires accurate 24-hour urine collection.
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.
Performing Laboratory
| Quest Diagnostics Nichols Institute |
| 14225 Newbrook Drive |
| Chantilly, VA 20153 |
