Well Stimpy, I too am a diabetic, average build, 5-10, 175. I always have had problems cleaning out since my diagnosis, maybe increase in age has to do with that too? Now sure, but my dr. told me that my kidneys will be less efficient due to my diatetes.. (note: I don't take insulin, I take a pill or two, watch what I eat etc.) I am going to tell her about my mj usage, how it helps control my blood sugar and I will mention this cleaning out to her. She'll tell me, we used to date. She takes good care of me. I will post the answers.

I would sub of course. Maybe call the number on the box and ask about the shelfl-life of your batch?
I've read that the shelf-life for frozen piss is 1 yr. Don't know how true that is.
Good Luck!