The problem with IGG is the rate of false positive is very high.
So with or without IGG you still have to do an elimination diet and food journal to find the things you are sensitive to. So you get an IGG panel, you start an elimination diet based on the foods you are most sensitive to, and eventually you find out through the elimination diet which foods affect you.
So does the IGG test actually do anything in the above scenario? I think it helps by by someone telling the patient they believe them and it helps compliance with an elimination diet because you paid money for a test so you are incentivized not to waste it. So like many of the psudohealthcare roles they provide a positive outcome but not necessarily by doing what they say they are doing.
I’m solidly on team Fodmap if the easy fixes like Gluten / Lactose don’t resolve issues
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