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Follow detailed instructions as below: 1) No food or drink after 6 pm a day prior to the test 2) on the day of the test DO NOT void urine after 8 am 3) at 10 am void urine and discard 4) Drink a glass of water at 10 am and 11 am Drink only deionized / distilled water 5) Collect urine voided at 12 noon in the container with 6N HCL as the preservative Record 2 hour volume on the urine vial and test request form