The Comprehensive Vitamin Panel includes testing the blood for 13 vitamins and is used to detect deficiencies across the vitamin spectrum. Our Comprehensive Vitamin Panel includes testing levels of the following 13 vitamins: Carotene (Beta Carotene)Vitamin AVitamin B1Vitamin B2Vitamin B3Vitamin B5Vitamin B6Vitamin B12 Vitamin CVitamin D 25-HydroxyVitamin EVitamin KFolic Acid (Folates)The Beta Carotene (Carotene) test measures levels of Carotene, a fat soluble nutrient that is a precursor to vitamin A.(Therefore having a beta carotene deficiency may lead to a vitamin A deficiency.) Beta carotene is the form of vitamin A that is derived from plant sources. The Vitamin A (Retinol) test measures levels of vitamin A, an essential nutrient required for healthy vision, skin growth and integrity, bone formation, immune function, and embryonic development. Vitamin A is required to produce photoreceptors in the eyes and to maintain the lining of the surface of the eyes and other mucous membranes. Deficiencies may occur in individuals with digestive disorders like celiac disease or irritable bowel syndrome. Retinol is absorbed from animal sources like eggs, fish and liver. The Vitamin B1 test measures levels of vitamin B1, also called thiamine. Vitamin B1 has a wide spectrum of uses including metabolic reactions and forming adenosine triphosphate (ATP), an energy source every cell type in the body uses. Deficiencies may occur in individuals with digestive disorders like celiac disease or irritable bowel syndrome. The Vitamin B2 test measures levels of vitamin B2, also called riboflavin. B2 is important for energy production, enzyme function, and normal fatty acid and amino acid synthesis. The Vitamin B3 test measures levels of vitamin B3, also known as niacin. Like all B vitamins, niacin plays a role in converting carbohydrates into glucose, metabolizing fats and proteins, and keeping the nervous system working properly. Niacin also helps the body make sex-related and stress-related hormones and improves circulation and cholesterol levels. The Vitamin B5 test measures levels of vitamin B5, also called Pantothenic acid, which gets its name from the Greek root "pantos" meaning everywhere because it is widely available in a variety of foods. This vitamin is necessary to synthesize cholesterol, produce red blood cells, maintain a healthy digestive tract and breakdown fats and carbohydrates. The Vitamin B6 test measures levels of vitamin B6, which is involved in the process of making serotonin and norepinephrine, chemicals that transmit signals in the brain. It is also involved in the formation of myelin, a fatty protein layer that forms around nerve cells. Deficiencies may occur in individuals with digestive disorders like celiac disease or irritable bowel syndrome. The Vitamin B12 test measures levels of vitamin B12, also known as Cobalamin. B12 plays an important role in the normal functioning of the central nervous system, metabolism, and the formation of red blood cells. Deficiencies may occur in individuals with digestive disorders like celiac disease or irritable bowel syndrome. The Vitamin C test measures levels of vitamin C, which plays an important role in the growth and repair of body tissues including repairing maintaining cartilage, bones and teeth, healing wounds and forming scar tissue, and aids in making skin, tendons, ligaments and blood vessels. The Vitamin D 25-Hydroxy (Calcidiol) test measures levels of Vitamin D 25-Hydroxy in the blood for deficiencies. The major function of vitamin D in humans is maintenance of calcium homeostasis. The Vitamin E test measures levels of vitamin E, a fat-soluable vitamin and antioxidant that has a wide spectrum of health uses. Vitamin E is considered an antioxidant. The Folic Acid test measures levels of folic acid (folate). Folic acid is a B vitamin that plays an important role in DNA synthesis and producing red blood cells. Folic acid is absorbed through the small intestine and stored in the liver and must be ingested through diet since it cannot be made by the body itself.