Results are reported as grams of urea nitrogen in total volume of urine submitted. Normal range is based on a 24-hour collection.
Specimen accepted daily, 24 hours
For times urine collection, instruct the patient to void at the beginning of the collection period and discard the specimen. Then collect all urine including the final specimen voided at the end of the collection period. Containers must be labeled with patient`s full name, room number, date and time collection started, and date and time collection finished.