Vitamin B12 is vital for good health. Your body needs steady levels of this nutrient to make enough red blood cells and keep your nervous system working.
Doctor orders vitamin B-12 test when the patient is detected with tingling in the hands and feet, problems with balance, a racing heart, confusion, dementia, weakness, and loss of appetite.
There are several ways to test your B-12 levels. You can get your blood drawn or take a home urine test. A normal level of vitamin B12 in your bloodstream is between 190 and 900 nanograms per milliliter (ng/mL).
