If you work shifts that change your waking times, or you get up in the night to go to the toilet, you may need to collect urine to test during your testing window. Collect your urine in a clean, dry container, and store at room temperature until you are ready to test. When you are ready to test, dip the absorbent tip into the sample for 15 seconds (not 3 seconds). Always test using the first urine after your longest sleep.