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22943 Urea Nitrogen, Urine Random

Urea Nitrogen, Urine Random
Test Code: UREA-RU
Synonyms/Keywords
Urine Nitrogen, Random​
Specimen Requirements
Fasting Required Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)		 Pediatric Minimum Volume
(no repeat)
No​ Urine​
 Urine Jug
Urine Container​
 ​ 10 mL aliquot​ 0.5 mL aliquot​ ​
Collection Processing Instructions
Aliquot from random urine without preservative. 
Aliquots can also be taken from a well-mixed urine container without preservative.
Indicate the collection time and total volume.
Specimen Stability Information
Specimen Type Temperature Time
Urine​ Refrigerate​ 7 days​
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Marshfield​ Monday through Sunday​ 6-8 hours​ Urease GLDH Rate Assay/Beckman AU
Reference Range Information
Performing Location Reference Range
Marshfield​ Not available​
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments
84540  ​ ​ ​ ​ ​
Synonyms/Keywords
Urine Nitrogen, Random​
Ordering Applications
Ordering Application Description
​Centricity ​BUN (Urea N.)
​Cerner ​Urea Nitrogen Urine
If the ordering application you are looking for is not listed, contact your local laboratory for assistance.
Specimen Requirements
Fasting Required Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)		 Pediatric Minimum Volume
(no repeat)
No​ Urine​
 Urine Jug
Urine Container​
 ​ 10 mL aliquot​ 0.5 mL aliquot​ ​
Collection Processing
Aliquot from random urine without preservative. 
Aliquots can also be taken from a well-mixed urine container without preservative.
Indicate the collection time and total volume.
Specimen Stability Information
Specimen Type Temperature Time
Urine​ Refrigerate​ 7 days​
Reference Range Information
Performing Location Reference Range
Marshfield​ Not available​
For more information visit:
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Marshfield​ Monday through Sunday​ 6-8 hours​ Urease GLDH Rate Assay/Beckman AU
For billing questions, see Contacts
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments
84540  ​ ​ ​ ​ ​
For most current information refer to the Marshfield Laboratory online reference manual.