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HelpTest Code UR OSMO Osmolality, Urine
Additional Codes
LAB420
Performing Laboratory
Central Peninsula Hospital
Collection Method
Sterile urine collection
Container
Sterile Urine Cup
Specimen Type
Sterile Urine Cup
Minimum Volume
0.5ml
Specimen Stability
| Ambient | 3 hours |
| Refrigerated (4°C to 8°C) | 24 hours |
| Frozen(-40°C to 0°C) | 7 days |
Reference or Target Ranges
250-800 mOsm/kg
Reportable Units
mOsm/kg
Critical Value
Not defined for this assay
Reasons for Rejection
| Hemolysis Threshold | No interference |
| Icterus Threshold | Not listed |
| Lipemia Threshold | Not listed |
| Other | QNS, contaminated, improperly labeled, improper specimen type |
Performance Information
| Days and Time Performed | 24/7 |
| Expected Turn Around Time |
Stat: 1 hour Routine: 4 hours |
| Stat Availabilty | Yes |
| Performing Bench | CPH Chemistry |
| Methodology/Method Description | Advanced Instruments Micro-Osmometer Model 3320 – Uses the technique of freezing-point depression to measure osmolality |
CPT Codes
83935
Last review/edit date
2025