| Field Name |
Data Description |
| Test Name |
Urea Nitrogen Clearance |
| Code |
Urea Nitrogen Clearance 24H Urine. |
|
CPT Code |
84545 |
| Last Modified |
6/5/2018 9:10:00 AM |
| Test Name |
U24 Ur Clr. |
| Synonyms |
Urea Clearance, UUN clearance, Urea C, |
| Patient Preparation |
|
| Spec. Requirements |
Blood AND Urine (24 Hour) |
| Tube |
Gold AND 24 hour plastic urine container |
| Collection Volume |
3.5 mL Gold AND Total of 24 hour urine |
| Storage |
Frozen, Refrigerated, or Ambient 14 Days |
| Routine TAT |
|
| STAT TAT |
N/A |
| Days Test Performed |
|
| Performed by BHS |
None |
| See Availability |
|
| Reference Lab |
LabCorp of America |
| Reference Lab Code |
002329 Urea Nitrogen Clearance |
| Clinical Use |
Renal function test |
| Reference Range |
|
| Critical Value |
|
|
|
| Testing Sample Type |
Serum AND Urine |
| Min Lab Testing Volume |
1.0 mL serum AND 10.0 mL urine aliquot |
| Special Handling |
Must be a timed collection |
| Lab Notes |
Collection: Serum must be drawn during urine collection. Separated serum from cells within 45 minutes of collection
Test includes:Blood urea nitrogen; urine clearance; urine urea nitrogen |
| Methodology |
Enzymatic (urease) |
| Limitations |
|
