I don’t have an answer for you about the labs. Sorry. I was just curious, what are the ELIZA tests?
I found my heartburn- I have had really bad GERD for a while now- got much better after removing gluten. It make just take a while, or you’re right, there may be more testing needed to see what else might be causing your episodes.
I also found I get very tired. Well, I have Primary Biliary Cirrhosis- an Autoimmune liver disease, that is known for making people VERY tired. But despite that, I found that when I increased my fats, I felt much better. And also when I take my vitamins! I increased my fats with real butter and heavy cream in my coffee (though I see you have a problem with dairy). But also I use lots of coconut oil, olive oil, and I eat nuts and full fat meat (meaning I don’t trim the fat off). These things seem to have helped with my fatigue. It seems like everyone nowadays is scared of fat, but it’s actually essential- especially when you’ve had to cutout so many other things from your diet.
Anyway, just thought I’d share my thoughts on that. Good luck! I hope you get more answers for the testing!