Hi Sharon here, I have had about four blood tests in the last two years I believe the results were over 1000 I have not taken an oral supplement in over two years and my doctor said to limit salads due to the vitamins.she had me on the b-12 due to being anemic and I am not now my neurologist said that I do have carpal tunnel which I wear a brace for but what concerns me is how can my levels stay so high after this amount of time?I am healthy eat well but like I said how can vitamins stay stored in your body??