| Test Name: | Blood Urea Nitrogen (BUN) |
| Epic Order Code: | LAB140 | | |
| CPT Code: | 84520 | | |
| Specimen(s) Type: | Plasma or Serum |
| Acceptable Container(s): |   Tops are light green and gold |
| Testing Schedule: | 24 hrs/day, 7 days/week |
| Turn Around Time: | STAT: 1 hour | | |
| | Routine: 2 hours | | |
| Collection Information: | No special patient preparation is required. Obtain specimen by standard collection procedures. |
| Transport Information: | Deliver to lab immediately. All specimens must be signed into the laboratory. |
| Reference Clients: | If unable to deliver to the lab within 1 hour, centrifuge the specimen and remove plasma/serum from the red cells. Store and transport at 2-8° C. Specimen must be received in the lab within 24 hours. |
| Causes for Rejection: | Improperly labeled, incorrect container, contaminated, insufficient quantity, incorrect/delay in transport. |
| Reference Range: | 0 - 1 yr: | 4.0 - 19.0 mg/dL | |
| | 1 - 18 yrs: | 5.0 - 18.0 mg/dL | |
| | 18 - 60 yrs: | 6.0 - 20.0 mg/dL | |
| | > 60 yrs: | 8.0 - 23.0 mg/dL | |
| Additional Information: | Test included in BMP, CMP and Renal Panel |