Hey everybody. I have about 6 ounces of frozen urine (My cousin doesn't do any drugs or prescriptions) to sub with and I have some questions about how to store it and thaw for use. 1. Can I freeze it in sandwich bags and thaw on the day of the test? 2. Should I store this in separate 2 ounce containers or should I put it in one container and thaw and pour what I need? 3. If I freeze as 1 container, do I thaw all the way or just enough to pour out what I need. 4. How long will it last after thawed on the day of the test? 5. Do I need to strain it for any parts that separate?