Identification seems to be one of the most difficult thing to do - I finally gave up on identification and used broad spectrum treatments since there can be some general classifications (e.g. gram negative vs. gram positive vs protozoa etc).
I suspected mycoplasma infection and did testing through Garth Nicolson's labs - no identification of mycoplasma (6 species tested). I learned quite a bit about gastrointestinal bugs and did many stool samples and never had a hit until I did a specific test which found an odd protozoa parasite.
Protozoa treatments have some general connections and at the same time, there can be a wide variety of cocktails that people respond to. (side note: cocktails would be to employ a wide sweep of different antibiotics - in fact you may know Dr. Borody who is in Australia. He is known for his work in gastroenterology and came up with a few cocktails to treat protozoa parasites.
I tried a few combinations - the first one was Flagyl which is not a nice drug - but stacked that with some other antibiotics such as trimethoprim and some others. I did derivatives of Flagyl such as Secnindazole (sp) and Tinidazole. Multiple combinations.
I stumbled on Alinia (Nitazoxanide) with Paromomycin, and it was quite effective. But ran into problems since it reversed on me. That is why I started on massive research on resistant strategies. Those I cover in the video series.
The key to successful eradication is cocktails IMO- and observing signs of resistance. I feel quite strongly that biofilms are problematic and obviously harbor the infection which stimulates continual immune activity.
I made a couple of videos in that series that deal with antibiotic sensitivities which is important. It really becomes a game of chance in that different microbes will respond differently to given antibiotics. But you are correct, testing is very hit or miss and I have seen that not only with myself but with countless others. Some of those people did sophisticated and expensive testing protocols.
If you want to share, I would be curious of which antimicrobials tried and/or helped. I have a comprehensive catalogue of known antimicrobials (natural and pharma) and have a wide personal experience of known antimicrobials. I also know the telltale signs of resistance.
Again, I found it more beneficial to do sweeps of antimicrobials than rely on testing results.
Dr. Borody
https://centrefordigestivediseases.com/about-us/professor-thomas-borody/