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This is Dr. David
most likely doesn't mean anything
how high was the gastrin elevated?
lack of stomach acid from proton pump inhibitors like nexium or protonix can cause high gastrin levels.
this can still cause temporary high gastrin levels.
did you have gastrin levels after this 400?
your prior PPIs could have caused that 400.
a gastrinoma would continue to have high levels.
let me know if you have other questions.
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