text:  okay so there is a blood test and I know about it because I'm the medical nutritionist that we do if we find someone is low in b12 like first first pass you don't do that test first pass and it's pretty reasonable in people over 60 or people who have medical conditions or people have other autoimmune conditions autoimmune thyroid disease you have celiac disease yeah check for b12 deficiency that makes sense because these autoimmune diseases sometimes come in groups