Hello doctor, My 5 years old son's serotonin level is 583 ng/mL, and the normal range is 50 to 200 ng/mL. So, we did chromogranin A blood test. It was 16, which is slightly elevated, as the normal range is 1.9 to 15. Should we be concerned and see a specialist? Please advise. Thank you.
Hi. Revert with more information to a medical oncologist online -->