Test Details: Vitamin E test measures the levels of vitamin E in the blood. Vitamin E is a fat soluble vitamin and an important nutrient required for the normal functioning of various organs of the body. It also acts as an antioxidant and is vital in maintaining structural integrity of skeletal, smooth muscles, and cardiac muscles. Vitamin E has a preventive effect against cancer, Alzheimer's disease, and the complications of diabetes. Vitamin E test is usually prescribed when the person shows signs and symptoms of vitamin E deficiency like night blindness, muscle weakness, speech disorders, balance and co-ordination problems, problematic immune system, etc.