- Vitamin B12
- Vitamin D
- Ferritin (iron stores)
Folate, vitamin B12, and vitamin D are essential vitamins that have several important functions in the body. Folate and vitamin B12 are needed for red blood cell formation and DNA synthesis, while vitamin D is essential for proper bone growth and maintenance. All three vitamins also have important roles in the nervous system and immune system.
Iron is a mineral with several essential functions in the body. It constitutes the core of both hemoglobin, the molecule that carries oxygen from the lungs to the rest of the body, and myoglobin, a protein that provides oxygen to the muscles. Iron is also essential for growth, normal cell function, and the production of connective tissue and some hormones.