Ask you doctor for the test. Most hospitals and medical clinic do the test regularly.
I believe apples and pears are considered okay in EFI diet for those IBSers without fructose malabsorption from what I can infer by reading the newsletters. Over the past 3-5 years many GI centers started recommending IBSers eat a low excess fructose/fructan diet until they are certain that excess fructose/fructans are not a problem.
-------------------- STABLE: ♂, IBS-D 50+ years - Science of IBS