Group: PPI

I would like to know if taking a PPI (Nexium) will alter the chromogranin A count?

October 17, 2015

Our Medical Director, Richard R.P. Warner MD, states that ALL PPI’s (example, Nexium) will alter CgA results and
should therefore be withheld for about  1 month prior to  the chromogranin A (CgA) test.  Zantac or Tagamet can be substituted during this…

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