Man, you rock, I'll be using a human Sub and I'll go with option B.. I just hope I can maintain the constant temp for at most a couple hours... should be testing between 10-12 tomorrow. Thank you again! I hope I will not have to use my own sample because as of today, I'm still THC positive with the first void of the day. I read somewhere that someone used his sample first to register the temp on the cup and then quickly threw it out and wiped it down, and poured in the sub in the same cup so that it would have the temp from the dirty sample.. I don't know if that would work in the short time they give you before they start knocking on the door to see if "everything is o.k.?" I'm really just nervous because I could use both hands to count the amount of times I've "not passed" and missed out on some great opps due to it. Had I been given the time every time, I would have abstained, but this is where I'm at today. I'll be sure to post my results tomorrow. Thanks again!