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HelpTest Code UPHOS Phosphorus, 24 Hour, Urine
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Reporting Name
Phosphorus, 24 HR, UUseful For
Evaluation of hypo- or hyper-phosphatemic states
Evaluation of patients with nephrolithiasis
Special Instructions
Necessary Information
24-Hour volume (in milliliters) is required.
Specimen Required
Supplies: Sarstedt 5 mL Aliquot Tube (T914)
Collection Container/Tube: 24-Hour graduated urine container with no metal cap or glued insert
Submission Container/Tube: Plastic, 5 mL tube or a clean, plastic aliquot container with no metal cap or glued insert
Specimen Volume: 4 mL
Collection Instructions:
1. Collect urine for 24 hours.
2. Refrigerate specimen within 4 hours of completion of 24-hour collection.
Additional Information: See Urine Preservatives-Collection and Transportation for 24-Hour Urine Specimens for multiple collections.
Specimen Minimum Volume
1 mL
Specimen Type
UrineSpecimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Urine | Refrigerated (preferred) | 14 days |
| Frozen | 30 days | |
| Ambient | 7 days |
Day(s) Performed
Monday through Sunday
Reference Values
≥18 years: 226-1,797 mg/24 hours
Reference values have not been established for patients who are less than 18 years of age.
Test Classification
This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.Method Name
Molybdic Acid
CPT Code Information
84105
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| POU | Phosphorus, 24 HR, U | 2779-7 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| POUU | Phosphorus, 24 HR, U | 2779-7 |
| TM12 | Collection Duration | 13362-9 |
| VL10 | Urine Volume | 3167-4 |
Forms
If not ordering electronically, complete, print, and send a Renal Diagnostics Test Request (T830) with the specimen.