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HelpTest Code LAB140 Urea Nitrogen, Serum
Collection:
Specimen: Blood
Preferred: Lt Green w/ Gel - Li Hep
Acceptable: SST or Red Top
Specimen Volume: 5 mL; Minimum 0.5 mL
Pediatric Collection:
One Lt Green w/ Gel - Li Hep, SST, or Red Top microtainer filled to 500 uL.
Stability:
Once serum/plasma is separated from cells:
Ambient: 8 Hours
Refrigerated (preferred): 1 Week
Frozen: 2 Weeks
Turn Around Time (TAT):
STAT: 1 HOUR
Routine: 4 HOURS
Test Availability:
24 hours a day / 7 days a week
Reference Interval:
| Age | Reference Range |
|---|---|
| < 15 days | 3 - 23 mg/dL |
| 15 days - < 1 year | 3 - 17 mg/dL |
| 1 year - < 10 years | 9 - 22 mg/dL |
| 10 years - < 19 years |
7 - 19 mg/dL Female 7 - 21 mg/dL Male |
| 19 years - < 50 years | 7 - 21 mg/dL |
| > 50 years | 8 - 26 mg/dL |
Additional Test Codes
UN
Performing Laboratory Section
Chemistry / UMC MAIN LABORATORY