gonyyongI thought it was that if you are taking a PPI, you will see elevated gastrin regardless of it you have a gastrinoma.
Thus to confirm diagnosis, you make them stop taking it, then re-measure gastrin → if it's still high, you have confirmed. If it's normal, it's something else+152019-06-07T23:16:52Z
thotcandyHe could have 4x the normal because of current PPI use. the point was that you'd get him off, wait for it to normalize, then check again to see if it's due to neoplasm or PPIs+2020-02-19T04:05:11Z