I asked David Christopher about this years ago because such people have entered amish areas and take them for allot of $$$$ and sale allot of products and my opinion is it is of no value and Dr. John Christopher warned to never allow a needle to poke a hole into your blood, because it allows infection to enter and the needle can never be clean enough, etc....so I don't suggest wasteing $$$ on such people in this practice.
REGARDLESS of any test, we know people have accumulated acids, so no need to test for something we all know is the base problem of ill health.