Hi Brett,
Glad I was able to jar your mind a bit. I've noticed that sometimes it helps your brain to process when you discuss things.
Man I hate those stool tests. My doc never told me any technique, all she said was "Here, take this little cup and bring me back some poo. Do you think you can go now?" NO! I was in total shock. It took me a couple days to finally get the nerve to attemp my poo catching, and then another couple days to get over the trauma of that. I wish you better luck.
As for Prometheus... they are good. I got my IBD, Lactose & Celiac tests done from them.
Keep us posted on how you are doing and what is going on with your tests.
Take care.