Medical News Today: What is the purpose of a vitamin B-12 level test?

The body needs vitamin B-12 for many processes. People with a deficiency may have neurological symptoms and fatigue, while an excess may indicate liver disease or diabetes. Doctors can use a vitamin B-12 level test to determine how much B-12 is in the body. Find out more about the test and what the results mean here.
Source: Health News from Medical News Today - Category: Consumer Health News Tags: Blood / Hematology Source Type: news