B12 vitamin levels

My 14 year old daughter had some blood work done for what we thought was anemia like syptoms all blood work came back normal except for her b12 level was very high 3800 (normal range is 250-900) we repeated the test results the same. We took her to oncologist and a endocrinologist both were a...

What are the numbers for high vitamin b12

My uncle's vitamin b12 level has crossed 9000.he's going into depression also.he is also a diabetic.I want to know what can be the consequences of this elevated vit b12 level?and what should we do to control it as he's a vegetarian.

My mother recently had her B12 levels checked and were found to be 2,000. Her MD told her normal was 211 and to stop her supplements but she does not take any vitamins/minerals of any kind. But has recently been feeling extremely fatigued. What could be the reason behind the elevation in the b12...