This research article regarding the development of a home monitoring method for Th1/Th2 imbalance has been mentioned on some of the forums lately. It sounds as if the test itself is a long way from being something that the average person can buy/use on a regular basis. But, what's interesting is that the article mentions green tea as being bad for PWMEs because it stimulates the Th2 side of the immune system -- exactly what I don't want, according to my doctor.
I find this particularly interesting because I drank a cup of green tea (decaf.) yesterday afternoon and woke up feeling horrible today. Still do, in fact. I had just climbed out of a brief two-day crash, the brevity of which I believed was a good sign that the Equillibrant was working. So today's unexpected dip right back into crash mode makes me wonder if the green tea had anything to do with it.
[5/23/12 update: Here's an article explaining why green tea is bad for Th2 dominant people.]