If you're in an area with excellent health care any GI doctor should be able to explain that the blood test can be conclusive for a positive but not for a negat

If you're in an area with excellent health care any GI doctor should be able to explain that the blood test can be conclusive for a positive but not for a negative. If there is any question they should be doing an endoscopy and taking a biopsy of the small intestine. Celiac disease causes the body to destroy villi and they can see that under the microscope.