I would be curious to see see the information saying CG-A is no longer used. My wife just had one @ Mayo.

@tomewilson Hi Tom: I have not heard that this test is no longer use. I still have this blood test each year as well, however, I know that there is a tendency for false positives. My blood levels of CgA are always extremely high, so my doctor also does a 24 urine (5HIAA) and a Serotonin blood test as well. Since they are in the normal range he does not concern himself with the high CgA. I was told that a high CgA could result from liver/kidney/heart problems or the use of proton pump inhibitor meds not just the NET issues. My blood work is always sent to Mayo for testing even though I live in Michigan. Here is a website that explains the false positive phenomena of CgA, http://www.carcinoid.com/health-care-professional/carcinoid-biochemical-testing.jsp and here is a website that explains the test itself https://www.carcinoid.org/for-patients/diagnosis/diagnosis-and-follow-up-tests/ I'd like to know what others have to say about this as well. Teresa