I am 18 years post transplant and am having issues with my red blood cells enlarging. Wonder if anyone else is having this problem? When blood work is done it's the MCV and MCH values. Since I don't drink alcohol, nephrologist says its due to the myfortic I have been taking. I am not anemic and preliminary blood results says that Vit B-12 and folic acid are normal. Dr thinks it has to do with my bone marrow. Will have to have more tests if it continues to rise.