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Urea Nitrogen, Serum / Plasma
| Item | Value | ||||
|---|---|---|---|---|---|
| Approval req'd? | No | ||||
| Available Stat? | Yes | ||||
| Test code | BUN | ||||
| Test group | Urea | ||||
| Performed by | Parnassus & Mt. Zion Chemistry | ||||
| In House Availability | Test available 24 hours per day 7 days per week | ||||
| Method | Enzymatic conductivity, kinetic (urease) | ||||
| Container type | Gold top or Light Green top | ||||
| Amount to Collect | 1 mL blood Click here for Microdetermination info | ||||
| Sample type | Serum or plasma | ||||
| Preferred volume | 0.5 mL serum or plasma | ||||
| Min. Volume | 0.2 mL serum or plasma Click here for Microdetermination info | ||||
| Units | mg/dL | ||||
| Normal range |
Note: 1. Normal range for children 0-5 years adapted from Beckman Coulter's "Pediatric Reference Range Guidelines for Synchron Systems" Bulletin 9345 2. Normal range for adults used for children 5-17 years. Beckman Coulter's "Pediatric Reference Range Guidelines for Synchron Systems" Bulletin 9345 for 5-15 year olds comparable to adult range. 2. Normal range for adults was determined by testing 270 male and female healthy blood donors at UCSF. |
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| Synonyms | BUN; SUN | ||||
| Stability | Room temperature 8 hours, refrigerated 2 days, frozen at -20C 1 week | ||||
| Turn around times | STAT 1 hour, Routine 4 hours | ||||
| Additional information | To convert mg/dL to mmol/L (SI units) multiply by 0.357. | ||||
| CPT coding | 84520 | ||||
| LOINC code | 3094-0 | ||||
| Last Updated | 2/17/2012 9:55:44 AM | ||||
| Entry Number | 965 | ||||
| Lab Procedure Link | Click here for Procedure |
If you have additional questions regarding this test, please call: 415-353-1667