Test Code LAB4857 Urea Nitrogen, 24 Hour, Urine
Additional Codes
Test Name in EPIC | EPIC Test Code | Mnemonic |
---|---|---|
UREA NITR, 24HR UR | LAB4857 | U24UN |
Methodology
Urease
Specimen Requirements
Specimen Type: Urine, 24-hour
Container/Tube: Aliquot tube
Specimen Volume: 5 mL
Specimen Minimum Volume: 2 mL
Collection Instructions:
1. No preservative. Mix well.
2. See Urine Collection in Special Instructions for 24-hour urine collection instructions.
Additional Information: Starting and ending times of collection and 24-hour volume are required.
Performing Laboratory
Measure total timed urine volume. Enter volume and hours of collection into LIS. Pour aliquot of urine into a smaller testing container. If specimen is cloudy, spin and separate supernatant. Refrigerate specimen until analysis is performed.
Specimen Transport Temperature
Refrigerate 5 days/Frozen OK/Ambient NO
Day(s) Test Set Up
Monday through Sunday
Performing Laboratory
Chemistry-
Central Region: St. Joseph's Medical Center Lab
East Region: SMDC Clinical Lab
West Region: St. Mary's - Detroit Lakes Hospital Lab
Test Classification and CPT Coding
84540
Reference Values
12-20 g/24 hours