performance scale a scale that measures a patient's performance status, serving as a prognostic indicator of seriousness of disease or disability. The most widely used scale is the Karnofsky scale.
Foods with high B-6 content include whole grains, whole-grain cereals, liver, bananas, green beans, carrots, chicken, eggs, meat, fish, spinach, walnuts and sunflower seeds. The need for vitamin B-6 increases in proportion to the amount of protein consumed.
Test Overview. A vitamin B12 test measures the amount of vitamin B12 in the blood. The body needs this B vitamin to make blood cells and to maintain a healthy nervous system. Vitamin B12 is found in animal products such as meat, shellfish, milk, cheese, and eggs.Most people who eat animal products are not likely to develop vitamin B12 deficiency anemia unless their bodies can't absorb it from food.he body needs this B vitamin to make blood cells and to maintain a healthy nervous system. Vitamin B12 is found in animal products such as meat, shellfish, milk, cheese, and eggs. Most people who eat animal products are not likely to develop vitamin B12 deficiency anemia unless their bodies can't absorb it from food.