University of Iowa
Diagnostic Laboratories
(UIDL) Test Directory

319-384-7212 (local)
1-866-844-2522 (toll free)


Urea Nitrogen, Random
Order Code: URUN
Order Form: Laboratory Requisition
Specimen:
Urine
Collection Medium:
Urine - Random urine container
Alternate
Collection Media:
Call laboratory for additional acceptable specimen collection 
containers.
Minimum:
10 ml urine, random sample
Testing
Schedule:
24 hrs/day, 7 days a week, including holidays.
Analytic Time:
3 hours (upon receipt in laboratory)
Methodology:
Enzymatic
Sample
Processing:
Submit in leakproof container.
Sample
Storage:
Room temperature or refrigerate if stored overnight, weekends or 
holidays.
Transport
Instructions:
Place specimen into zip-lock type bag, seal bag.
Place requisition into outside pocket of bag.
Ship ambient or refrigerate.
Instructions:
Random sample, no preservative.
CPT Code:
84540
 
See Additional Information:
Urine Tests Requiring no Preservatives

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Updated: 06/24/2005