Medically reviewed by Steffini Stalos, DOA vitamin B12 blood test is a reliable way to determine if you have adequate levels of this crucial nutrient. Vitamin B12 is essential for nerve function, ...

Low levels of vitamin B12 can cause problems with your nervous system and blood cell production. A simple blood test can tell you whether your levels are low. Find out more from the experts at WebMD.

A vitamin B12 level test checks the amount of vitamin B12 in the body. Normal levels usually range from 200 to 900 picograms per milliliter, but the way of measuring will depend on the laboratory.

New guidance suggests that a vitamin B12 test should be offered to older people who feel fatigue or unbalanced on their feet. Up to 10% of people over 75 suffer from deficiency of B12, a vitamin that ...

Different blood tests, including a complete blood count (CBC), iron test, or B12 test, can help diagnose anemia, which can have different causes. Anemia occurs when there are not enough healthy ...

People who are at risk of developing vitamin B12 deficiency should take a blood test and the complete blood count (CBC) will provide details about whether the vitamin B12 levels are low.