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HelpTest Code 12PU1 Protein, Total, 12 Hour, Urine
Necessary Information
12-Hour volume is required.
Specimen Required
Supplies: Sarstedt 5 mL Aliquot Tube (T914)
Container/Tube: Plastic, 5 mL tube
Specimen Volume: 4 mL
Collection Instructions:
1. Collect a 12-hour urine specimen. Specimens should be collected before fluorescein is given or not collected until at least 24 hour later.
2. No preservative.
3. Invert well before taking 4-mL aliquot.
4. Do not overfill aliquot tube, 4 mL at most.
Additional Information: See Urine Preservatives-Collection and Transportation for 24-Hour Urine Specimens for multiple collections.
Useful For
Evaluation of renal disease
Screening for monoclonal gammopathy
Screening for postural (orthostatic) proteinuria
In select clinical situations, collection of a 12-hour specimen may allow more rapid detection of proteinuria states (eg, screening pregnant patients for preeclampsia)
Special Instructions
Reporting Name
Protein, Total, 12 HR, USpecimen Type
UrineSpecimen Minimum Volume
1 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Urine | Refrigerated (preferred) | 14 days | |
| Frozen | 30 days | ||
| Ambient | 24 hours |
Reject Due To
| All specimens will be evaluated at Mayo Clinic Laboratories for test suitability. |
Reference Values
<163 mg/12 hours (day or night collection)
Reference values have not been established for patients <18 years of age.
Specimen Retention Time
7 daysPerforming Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
84156
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| 12PU1 | Protein, Total, 12 HR, U | 26801-1 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| TPU12 | Protein, Total, 12 HR, U | 26801-1 |
| TM12A | Collection Duration | 13362-9 |
| VL12A | Urine Volume | 13620-0 |
Forms
If not ordering electronically, complete, print, and send a Renal Diagnostics Test Request (T830) with the specimen.
Day(s) Performed
Monday through Sunday