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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

Reference Values

12-20 g/24 hours

Test Classification and CPT Coding

84540

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

Special Instructions