2mL aliquot from a 24 hr collection - Frozen Immediately
Instruct the patient to void at 8 AM and discard the specimen. Then collect all the urine, including the final specimen voided at the end of the 24-hour collection period (ie, 8 AM the next morning). MEASURE AND RECORD on the test request form the 24-hour total volume. Mix well. Transfer the urine into a transport tube with screw cap. Label the container with the patient's name, date, and time collection started and finished. The specimen should be FROZEN immediately and maintained frozen until tested.