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HelpTest Code LAB441 Protein, Total, 24 Hour Urine
Useful For
Protein measurements in urine are used in the diagnosis and treatment of disease conditions such as renal disease, heart disease, or thyroid disorders which are characterized by proteinuria or albuminuria.
Methodology
Turbidimetric
Performing Laboratory
Bozeman Health Laboratory Services
Specimen Requirements
Specimen Type: Urine
Container/Tube: 24-hour urine collection container
Specimen Volume:
Preferred: 10 mL
Acceptable: Entire collection
Specimen Minimum Volume: 1 mL
Collection Instructions:
- Collect a 24-hour urine specimen.
- Starting and ending times of collection are required.
- No preservative. Refrigerate specimen during collection.
- Mix well before taking aliquot.
- Centrifuge specimen before analysis.
- Follow special collection instructions below.
Special Instructions
Specimen Transport Temperature
Refrigerated
Specimen Stability
| Specimen Type | Temperature | Time |
|---|---|---|
| Urine | Ambient | 2 hours |
| Refrigerated | 7 days | |
| Frozen | 1 month |
Reference Values
0-150 mg/24 hours
Additional Information
- X-ray contrast media may interfere with testing. Samples should be collected before fluorescein is given or at least 24 hours later.
- Levodopa, methyldopa and Na2‑cefoxitin cause artificially high total protein results and calcium dobesilate causes artificially low protein results at the therapeutic drug level.
- Non-centrifuged samples may produce elevated results.
Day(s) Test Set Up
Monday through Sunday
Test Classification and CPT Coding
84156-Protein
81050-Urine timed measurement (if appropriate)