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Urea Nitrogen, Urine 24 Hour
Test CodeUREA24HR
Alias/See Also
Urea Nitrogen (BUN), Urine 24 Hour
CPT Codes
84540, 81050
Preferred Specimen
24 hour urine, refrigerate during collection.
Minimum Volume
24 HR urine container sample
Instructions
1. Obtain container
2. Patient to void at start of 24 hour period-discard urine. Timing is then begun.
3. Collect all urine for 24 hours
4. Refrigerate container during collection
5. At end of 24 hour period, patient to void - this urine must be included in the collection.
6. Deliver specimen to laboratory at end of collection period.
7. Container must be labeled with "Time Started" and "Time Completed".
2. Patient to void at start of 24 hour period-discard urine. Timing is then begun.
3. Collect all urine for 24 hours
4. Refrigerate container during collection
5. At end of 24 hour period, patient to void - this urine must be included in the collection.
6. Deliver specimen to laboratory at end of collection period.
7. Container must be labeled with "Time Started" and "Time Completed".
Reference Range
Male/Female Ages >=1 Day - <2 Months: 15-60 mL/24HR
Male/Female Ages >=2 Months - <6 Months: 250-450 mL/24HR
Male/Female Ages >=6 Months - <1 Year: 400-500 mL/24HR
Male/Female Ages >=1 Year - <2 Years: 500-600 mL/24HR
Male/Female Ages >=2 Years - <5 Years: 600-740 mL/24HR
Male/Female Ages >=5 Years - <8 Years: 650-1000 mL/24HR
Male/Female Ages >=8 Years - <16 Years: 700-1600 mL/24HR
Male/Female Ages >=16 Years: 1000-1600 mL/24HR
Male/Female Ages >=2 Months - <6 Months: 250-450 mL/24HR
Male/Female Ages >=6 Months - <1 Year: 400-500 mL/24HR
Male/Female Ages >=1 Year - <2 Years: 500-600 mL/24HR
Male/Female Ages >=2 Years - <5 Years: 600-740 mL/24HR
Male/Female Ages >=5 Years - <8 Years: 650-1000 mL/24HR
Male/Female Ages >=8 Years - <16 Years: 700-1600 mL/24HR
Male/Female Ages >=16 Years: 1000-1600 mL/24HR
Performing Laboratory
Little Company of Mary Hospital
2800 W. 95th St.
Evergreen Park, IL 60805
