UW Hospital and Clinics Lab Test Directory
| Test Name: |
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Osmolality, Urine
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| Test Code(s): |
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UOSM / GM2720
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| CPT Code(s): |
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83935
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| Methodology: |
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Freezing Point Osmometer
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| Days Performed: |
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Daily, 24 hours.
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| Turnaround Time: |
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Stat: 1 hour.
Routine: 4 hours.
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Specimen Requirements
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| Specimen: |
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Random urine
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| Collection Container: |
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Preferred: Sterile screw cap container
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| Collection Volume: |
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Preferred: 10 mL
Pediatrics: 1 mL
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| Sample Analyzed: |
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Urine aliquot
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| Volume Required: |
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Preferred: 1 mL
Pediatrics: 0.5 mL
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| Specimen Transport: |
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Transport specimen to UWHC Core Laboratory (B4/220). Transport with coolant pack if coming from outreach location.
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| Stability: |
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Ambient: 48 hours
Refrigerated: 48 hours
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Interpretation
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Reference Interval:
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0 days and up: 50 - 1200 mOsm/kg
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