What are causes of macrocytosis?
Which tests may be abnormal in vitamin B12 deficiency?
Vitamin B12 deficiency is diagnosed by showing a low serum vitamin B12 level (<200 ng/L). What test would order if the vitamin B12 level was low-normal in a patient you suspected vitamin B12 deficiency in?
Which test is most specific for diagnosis of pernicious anemia?
True or false: the only route for effectively administering vitamin B12 is intramuscular.