Which Gut test? So many different labs

I want to get a stool test done. I would like to get as much information as possible but it seems that there's no one lab that does everything that's available.

I don't suppose there's a comparison website or article anywhere that shows the differences between the various tests on offer? I'm very much new to this so I don't really know what everything means but I'm learning as quickly as I can.

So I'm looking at a combo of at least two labs I think. For those who have experience of this...

Which Gut test? So many different labs