Urine

24 Hour Urine Collections:

1. To begin the collection, empty the bladder and discard this urine. Record this time and date as the start of the collection.
2. 24 hour urine collections should be started Sunday through Thursday.
3. Collect all urine excreted during the next 24 hours in the urine collection container.
4. Exactly 24 hours after the collection was begun, empty the bladder for the last time. Add this urine to the 24 hour urine container. The collection is finished.
5. Avoid contact with metal during the collection.
6. The container should be refrigerated during and after the 24 hour collection period until it can be brought to Saint Luke’s Regional Laboratories.

1. Measure and record the 24 hour urine total volume on the test request form.
2. Mix well.
3. Transfer the urine into an amber plastic transport tube with amber screw cap. (Protect from light!)
4. Label the container with the patient's name, date, and the time the collection started and finished.
5. Freeze the specimen immediately and maintain frozen until tested.
6. If an amber tube and cap are not available, cover a clear plastic transport tube completely from top to bottom with aluminum foil. Identify the specimen with the patient's name, directly on the transport tube and on the outside of the aluminum foil. Secure with tape.
7. To avoid delays in turn around time when requesting multiple tests on frozen samples, submit separate frozen specimens for each test requested.
8. Freeze the urine aliquot immediately and protect from light.

24 hour urine collections preserved with 30% Glacial Acetic Acid:
Frozen - 30 days
Refrigerated - 24 hours

Specimen not refrigerated during collection, specimen not protected from light, specimen not a 24 hour collection, or urine aliquot specimen not received frozen at testing laboratory.

84110 - Porphobilinogen, Qn, 24-HR Ur (EAP 30120570)
81050 - Urine Volume Measurement (EAP 30033360)