The best thing to do is practice. If you are going to use the QF container, pour the QF into a another clean container away from sunlight and practice with water. You can get the water to 100+ degrees just from the tap. Store it where you will be hiding it and see how quickly the temperature drops in 1/2 hour, 1 hour, etc. Practice getting it out and pouring into a small sample cup. Take the temperature of the sample cup (I used a child's temp strip I got at Walgreens for about $2 but a digital thermometer is good too) If the sample is within 94-98 degrees, you get an A for your practice run.

I was tested at Labcorp and passed with QF4.0. They made me wait over an hour in the waiting room (not typical), so prepare for the unexpected. Make sure you can keep that QF at the perfect temperature and you will be good.

Regarding the amount needed, the 2oz should be enough. Tell them thats all you could do. I had bought 2 QFs and a 3oz bottle... I only needed about half to fill it to the line, so I could have easily gotten by with just the 2oz.

Because of the place I was carrying it (only available to females) I don't have experience with the heating pads or other male methods of carrying... read the forum for ideas or maybe the guys will post in more details how to keep the heat... and practice. Good luck! :smokin: