 [ Symptoms ] following my discution with afriend who is doctor out of california he told me i may suffer from b12 deficiency latley my hmos doctor send ne to b12 test that seems fine200 my friend strongly sugested that i try to get the mm test wich may be the only test that relevant for b12 deficiency does someone knows if the hmos are covering this test ingeneral thanks yarden [ Disease ] the normal level of vitamin b12 in the blood is 200 1000ngl the levels of methylmalonic acid are generally high during anemia due to a lack of vitamin b12 or folic acid methylmalonic acid can also be checked with a urine test most hmos cover diagnostic services when medically necessary and prescribed by a participating physician check with your insurance provider for more detailed information about your coverage