Maybe it's a Canadian thing? Because I was told the same thing. I had a colonoscopy which was negative and was later hospitalized for malapsorbtion so I suggestion an endoscopy to check for celiac and they told me they checked for that when they did the colonoscopy...I was pretty stunned but that's what they said. They said they were able to get high enough (ewww) that they could get an accurate sample.
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Re: ps- the colonoscopy is to check for celiac, if you can believe... NT
