Home
HelpTest Code OSMU Osmolality, urine
Additional Codes
| Epic Ordering Code | LAB420 |
| NBS code | LBC00746 |
| Service code | 31308 |
Specimen Requirements
Submit the following:
| Container: |
| Random Urine Container |
Processing Requirements
Collect mid-stream urine in preservative-free urine container. Unacidified Urine.
Specimen type: Urine
Volume: 10mL
Specimen Stability
| Specimen Type | Urine |
|---|---|
| Ambient | 36 hours |
| Refrigerate | 36 hours |
| Frozen | 6 months |
Specimen Condition
| Haemolysis | Not available |
|---|---|
| Icterus | Not available |
| Lipaemia | Not available |
| Others | Not available |
Methodology
Freezing-point Depression
Days and Times Performed
24 hrs, TAT 1 day
Reference Interval
100 – 1200 mOsm/kg
Testing Laboratory
National University Hospital
Clinical Chemistry, 67724346
Useful For
Assessing the concentrating and diluting ability of the kidney.
Update
Last updated 26/07/2026
LOINC Code Information
2695-5