What is the gbd test?
Technically, doctors don't give an "official" diagnosis unless there are positive blood tests, a positive biopsy, and a positive response to the gluten-free diet. Luckily not all doctors are such sticklers so if it quacks like a duck and walks like a duck... My doctor diagnosed me with just blood tests and never bothered checking how I was doing on the diet. When I saw a rheumy for suspected lupus (that's not uncommon around here) she complained that I should have been biopsied. I just smiled and shrugged. (She told me my arthralgias were caused by celiac disease and I am cautiously believing her.)
If you have a positive biopsy, I would say it's case closed - celiac disease. If no tests are positive, and you react to gluten, it is either celiac disease or NCGI (non-celiac gluten intolerance), but luckily the treatment is exactly the same.
I agree with you, with the positive biopsy and the DNA, it is case closed. Technically, I think it is three out of four, if you include the DNA. So if OP responds to the gluten free diet, then there is three out of the four.
CeliacinSenegal, I've been told just being celiac can cause you to get a lot of parasites you normally wouldn't get. I'm sure that doesn't mean you can't have giardia without celiac. I didn't know that it could cause flattened villi on its own. My dog had giardia a couple times and I wonder if I picked it up too, because my immune system is all screwed up due to celiac.
Whatzie, your doctor is on the right track in my opinion. If you have a strong and profoundly positive result after going 100% gluten free, I think that should put it to rest. But based on your biopsy result, that is enough evidence for the doctor to prescribe a complete gluten free diet.
I'm on my first week of 100% gluten free. I have thrown out all my foods that I even suspected might have gluten, and I ordered a bunch of food from Gluten Free Mall. Talk about a pick me up, it was like Christmas. They have all kinds of good stuff.