Vitamin B12


This blood test measures Vitamin B12 levels. All of the water-soluble B vitamins work as a team to help promote healthy nerves, skin, eyes, hair, liver, muscle tone and cardiovascular function. Vitamin B12 is necessary for red blood cell production and neural function. Deficiencies in Vitamin B12 may be due to an inherited factor, limited dietary intake or problems with absorption (due to lack of intrinsic factor or gastric secretions in the stomach). A Vitamin B12 deficiency can cause anemia, neurologic disorders and an elevation in the inflammatory marker homocysteine, which has been implicated in Alzheimer’s disease. If B12 is deficient, the body can have a difficult time using the B vitamin, folate.

Test Preparation For Optimal Results:
If possible, have the lab collected early in the morning or shortly after waking. For comparison purposes, have subsequent labs collected close to the same time.

Disclaimer: Your health care provider should evaluate a deviation from normal ranges.