The Vitamin D Test measures levels of vitamin D, a key nutrient for bone strength and overall health. Your body produces vitamin D after exposure to sunlight or from consuming certain foods and supplements. Because it enables your body to absorb calcium, vitamin D is essential for healthy bones and also helps the immune system fight infections.
This test may be right for those who:
Abnormal vitamin D levels may have no symptoms, and some people can have abnormal vitamin D levels for years without knowing it. Some symptoms of low vitamin D levels include depression, fatigue, joint or muscle pain, and weakness. Low vitamin D levels can also affect organs and body functions including bone health, metabolism, heart health, and immune health.
The Vitamin D Test does not require fasting.
B12 is a vitamin that is necessary for normal red blood cell (RBC) formation, neurologic function, and DNA production. B12 must be supplied by the diet or supplementation because the body is not able to produce it.
People who are deficient in Vitamin B12 may not have any symptoms or may present with symptoms of anemia or nerve damage. General symptoms related to anemia and nerve damage include fatigue, weakness, difficulty concentrating, depression, numbness or tingling in the hands and feet, headaches, moodiness, and gastrointestinal symptoms. Some people may not have all or any of these symptoms but still have deficiency. Early detection is important to prevent irreversible damage over time, especially to the nervous system. Generally, people who are likely to have a B12 deficiency have:
This test may be appropriate for those who:
The Vitamin B12 Test does not require fasting.