VITAMIN B12 (COBALAMIN)

VITAMIN B12, Cobalamin

Vitamin B12 is an essential vitamin. This means that the body requires vitamin B12 to work properly. Vitamin B12 can be found in foods such as meat, fish, and dairy products. It can also be made in a laboratory. It is often taken in combination with other B vitamins.

A vitamin B12 test measures the amount of vitamin B12 in the blood. The body needs this B vitamin to make blood cells and to maintain a healthy nervous system.

Vitamin B12 is usually measured at the same time as a folic acid test, because a lack of either one or both can lead to a form of anemia called megaloblastic anemia. Lack of vitamin B12 also affects the nervous system.

Both high and low levels of vitamin B-12 may indicate an underlying problem. Low levels of B-12 can suggest anemia, an internal parasite, and hyperthyroidism. High levels of B-12 may increase your risk for cancer.