<<Disclaimer: Verify this information before applying it to your situation.>> Hi, Listmates, I am a diagnosed CD for 10 years. Yesterday I went to see a new Gastorenterologist and he wants to check my Vitamin B12 levels. He says I have a flat tongue and this is an indication that I am not getting enough Vitamin B 12. Has anyone heard of this before? He is very knowledgable about CD. Should everyone have these test done and how often? He ordered all kinds of blood work. My former Gastro never did this. He just told me to follow the GF diet and I did. Virginia