do the questionaire at wholeapproach.com, that will give you a very good idea of what your candida levels are at.

http://wholeapproach.com/

And yes there are labs that can test your stools for different pathogens, but they are not real conclusive and VERY expensive.

It is a tough diet to do, but a very necessary step to successfully chelate metals without doing long term or permanent damage.

Best luck,
Sandi