Hello Would appreciate advice on a case. Patient with resistant GORD on PPI, ranitidine, gaviscon - still symptomatic Gut hormone measurement on treatment - Gastrin = 52 (ref 0-40 pnol/L), Somatostatin 158 (ref 0-150 pmol/L). Other gut hormones normal. Chromogranin A and B both normal. Unlikely be able to get patient off PPI for 2/52 prior to a repeat sample for gut hormones. What to do next...? Thanks Rob ------ACB discussion List Information-------- This is an open discussion list for the academic and clinical community working in clinical biochemistry. Please note, archived messages are public and can be viewed via the internet. Views expressed are those of the individual and they are responsible for all message content. ACB Web Site http://www.acb.org.uk List Archives http://www.jiscmail.ac.uk/lists/ACB-CLIN-CHEM-GEN.html List Instructions (How to leave etc.) http://www.jiscmail.ac.uk/