Vitamin B12 measures the level of cobalamin in your blood. B12 is essential for red blood cell formation, neurological function, and DNA synthesis.
Category: Vitamins & Minerals
Also known as: vitamin b12, b12, cobalamin, vit b12, cyanocobalamin
Reference range: 200–900 pg/mL (Source: ABIM)
Standard unit: pg/mL
High values may indicate
High vitamin B12 levels may indicate liver disease, certain blood cancers (such as leukemia or polycythemia vera), kidney failure, or excessive supplementation.
Low values may indicate
Low vitamin B12 levels may indicate pernicious anemia, dietary deficiency (common in vegans), malabsorption disorders such as celiac disease, or neurological damage including peripheral neuropathy.