It is highly unlikely that wheat is a problem unless you suffer from celiac's disease.
There is a lot of misinformation about wheat and gluten frequently given by misguided and uneducated nutritionists at HFS.
The gold standard for diagnosis is the small intestinal biopsy, done during a procedure called endoscopy. Blood tests that indicate higher than normal levels of specific antibodies are also used to support the diagnosis, but positive antibodies are not required to make the diagnosis.
Unless you are diagnosised with celiac's disease by a physician there is no need to remove wheat from your diet as it is an excellent source of SF and resistant starch.
-------------------- STABLE: ♂, IBS-D 50+ years - Science of IBS