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HelpOrder Code LAB1124 Osmolality, Urine
Useful For
Assist in establishing the proper diagnoses and treatments for patients with disorders involving water and electrolyte imbalances.
Specimen Requirements
Specimen Type: Urine
Collection Container: Sterile urine cup
Transport Container: 5 mL aliquot tube
Specimen Volume: 2 mL
Minimum Volume: 1 mL
Specimen Stability
| Specimen Type | Temperature | Stability |
| Urine | Ambient | N/A |
| Refrigerated (preferred) | 24 hours | |
| Frozen | 1 week |
Reference Values
- Random: 50 - 1400 mOsm/kg, depending on fluid intake
- Random: > 850 mOsm/kg after 12 hour fluid restriction
Day(s) Test Set Up
Monday through Sunday
Performing Laboratory
Ridgeview Medical Center Laboratory
Methodology
Freezing Point Depression
Test Classification and CPT Coding
83935