| Field Name |
Data Description |
| Test Name |
Urea Nitrogen ( Urine Urea Nitrogen) |
| Code |
UUN or UUN-T |
|
CPT Code |
84520 |
| Last Modified |
4/20/2023 1:03:00 PM |
| Test Name |
Urea Nitrogen ( Urine Urea Nitrogen) (3251) |
| Synonyms |
|
| Patient Preparation |
|
| Spec. Requirements |
Urine |
| Tube |
Random or 24 hr. |
| Collection Volume |
3 mL aliquot of original collection. |
| Storage |
See Special Handling |
| Routine TAT |
4 hours |
| STAT TAT |
50 min |
| Days Test Performed |
Daily |
| Performed by BHS |
All Hospitals |
| See Availability |
All shifts |
| Reference Lab |
N/A |
| Reference Lab Code |
|
| Clinical Use |
Used in the treatment and diagnosis of certain renal and metabolic diseases. |
| Reference Range |
24 hour urine: 7 - 16 g/24 hr
Random urine: No reference range established |
| Critical Value |
|
|
Component |
UUN (24-Hr) |
|
Reference Range |
7-16 gm/24 hrs |
|
Critical Value |
|
 |
|
Component |
UUN (Random) |
|
Reference Range |
No established range |
|
Critical Value |
|
|
|
| Testing Sample Type |
Urine |
| Min Lab Testing Volume |
0.5 (0.2) mL |
| Special Handling |
Keep 24 hour collection on ice/refrigerated during collection.
Plasma/Serum Stability: Ambient -7 Days; 2-8C - 7 Days;-20C - 1 year
Urine Stability: Perform assay within 2 hours of collection. |
| Lab Notes |
Measure and record urine 24 total volume in LIS before aliquoting specimen.
No preservative is needed. |
| Methodology |
ENZ - Enzymatic |
| Limitations |
|
