Conversation: The conversation between human and AI assistant.
[|Human|] Hi, I have been a vegetarian for over 25 years, and have previous blood tests have indicated that my B12 was a bit low, but within the normal range.  However, i recently had a test that showed my B12 as over 1000.  I dont supplement this (except for a multi vitamin).  Also, my white blood cell count was a bit low, and urea was low.  Can you please tell me the possible causes?Regards!Leah
[|AI|]  Hello and welcome to Chat Doctor, Vegetarians are prone to have vitamin B 12 deficiencies. Vitamin B 12 supplements can be taken regularly. It will keep the B12 levels within normal range. A fall in white blood cell is most commonly caused by infections. A differentiation leukocyte count (DLC) will determine the component which is low. Further management will depend on the result of the investigations. Thanks and take care Chat Doctor.