It's a test for various markers which show gut health/intestinal bacteria. I dont' know the benchmarks sorry as I've just had them done with two different health professionals (not GPs) I've worked with. So I just know its the test I took but they reviewed results.

As an aside, two different people just because I moved country, the first one is like a god to me as he cured my sleep issues.  https://www.marekdoyle.com/  He was great as he was constantly learning from his patients results to refine what he did.

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