Vitamin B12 Test

The vitamin B12 test, also known as the cobalamin test, is a blood test that measures the levels of vitamin B12 in the bloodstream. Vitamin B12 is an essential nutrient necessary for the proper functioning of the nervous system, the production of red blood cells, and the synthesis of DNA. The test is commonly used to assess B12 levels in the body and diagnose vitamin B12 deficiency or other related disorders. Low levels of vitamin B12 can lead to various health problems, including anemia, neurological symptoms, and fatigue. This test is often ordered if a person exhibits signs and symptoms of vitamin B12 deficiency, such as weakness, fatigue, tingling or numbness in the extremities, memory problems, or difficulty in maintaining balance.