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HelpTest Code UR OSMO Osmolality, Urine
Additional Codes
LAB420
Collection Method
Sterile urine collection
Minimum Volume
0.5ml
Container
Sterile Urine Cup
Acceptable Specimens
Urine
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 |
Specimen Stability
| Ambient | 2 hours |
| Refrigerated (4°C to 8°C) | 24 hours |
| Frozen(-40°C to 0°C) | 1 week |
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
Feb 2024