3 — The blood tests help with diagnosis (checking for gut damage [celiac disease], confirming gluten antibody responses, checking nutritional status). (ericbakker.com)
Obviously those people still have a problem with gluten, but in those cases, it is not from gut damage. (kellybroganmd.com)
The normal tests at your doctors office may not tell you about gluten intolerance until there is extreme gut damage. (grassfedgirl.com)