Private Stool Testing Facilities?

I am considering FT again, but would like to try a different donor to see if it may affect the results. The last time I did it, I went through my doctor to get a Diagnostecs kit for stool analyzation. They will not take private samples and I would prefer to not drop an extra $200 just so my doctor can give me a testing kit. Are there other options available? Thanks for any help.

For anybody interested, I have found 2 testing facilities so far. They include Genova diagnostics and Great Plains Laboratories. Metametrix used to be one but has now merged with Genova.