Urea Nitrogen, Urine Timed
Test Mnemonic
UUNT
CPT Codes
- 84540 - QTY (1)
LOINC ®
3095-7
Performing Laboratory
Cleveland Clinic Laboratories
Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 5 mL | Urine, timed (well-mixed) | Clean container | Refrigerate during collection. | Refrigerated |
Minimum Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 3 mL |
Stability
| Environmental Condition | Description |
|---|---|
| Ambient | 2 days |
| Refrigerated | 7 days |
| Frozen | 1 month |
Days Performed
Mon - Fri
Turnaround Time
8 hours
Methodology
| Name | Description |
|---|---|
| Urease |
Reference Range
| Urea Nitrogen, Urine Timed | |||||
|---|---|---|---|---|---|
| Sex | Age From | Age To | Type | Range | Range Unit |
| Normal | 0 - 1 | g/hr |
Special Info
Indicate volume and hours of collection on requisition.
Clinical Info
Evaluation of renal function