Diagnostic Blood Test:
Vitamin B12 is involved in many areas of health. Proper vitamin B12 levels help support metabolism, the formation of new blood cells, the function of the nervous system, and the creation of new DNA. Vitamin B12 testing may be a good idea for people who are experiencing possible symptoms of anemia (such as tiredness and nausea) or nervous system conditions (such as numbness or weakness).
Note: This test may exhibit interference when sample is collected from a person who is consuming a supplement with a high dose of biotin. Cease biotin supplementation at least 72 hours prior to blood draw.