Life Extension sells a comprehensive stool analysis test with parasitology direct to consumers, no prescription required, for $375 (
Link).
The attached sample report from Life Extension shows that the stool test is actually run by Doctor's Data.
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On a different note, the current favorite stool test among "holistic" GI experts on the web and even ME/CFS specialist Paul Cheney seems to be Diagnostic Solutions' GI-MAP test, which uses "qPCR" technology.
About a year ago, I saw a well-regarded nutritionist for SIBO testing. I mentioned that I had results from a GI-MAP test from early 2108. She said she doesn't trust Diagnostic Solutions because she had gotten back a number of discordant, non-sensical GI-MAP results when testing the same patients sequentially -- both before and after treatment. (Also, the fact that the Chief Medical Officer of Diagnostic Solutions appears to be a chiropractor, not an MD or PhD, doesn't instill all that much confidence.)