Vitamin D Profile
Vitamin D is a nutrient that is essential for healthy bones and teeth. There are two forms of vitamin D that are important for nutrition: vitamin D2 and
- Vitamin D2 mainly comes from fortified foods like breakfast cereals, milk, and other dairy items. Vitamin D3 is made by your own body when you are exposed to sunlight. It is also found in some foods, including eggs and fatty fish, such as salmon, tuna, and mackerel. In your bloodstream, vitamin D2 and vitamin D3 are changed into a form of vitamin D called 25 hydroxyvitamin D, also known as 25(OH)D. A vitamin D blood test measures the level of 25(OH)D in your blood. Abnormal levels of vitamin D can indicate bone disorders, nutrition problems, organ damage, or other medical conditions.
You don't need any special preparations for a vitamin D test
A vitamin D test is a blood test. During a blood test, a health care professional will take a blood sample from a vein in your arm, using a small needle. After the needle is inserted, a small amount of blood will be collected into a test tube or vial. You may feel a little sting when the needle goes in or out. This usually takes less than five minutes.
The normal range of vitamin D Total is measured as nanograms per milliliter (ng/mL) or nmol/L and can vary from lab to lab.
Reference range (ng/mL)
If your results show a deficiency in vitamin D, it may mean you are:
Not getting enough exposure to sunlight Not getting enough vitamin D in your diet Having trouble absorbing vitamin D in your food A low result may also mean your body is having trouble using the vitamin as it should, and may indicate kidney or liver disease.
A vitamin D deficiency is usually treated with supplements and/or dietary changes.
If your results show you have an excess of (too much) vitamin D, it is most likely due to taking too many vitamin pills or other supplements. You?ll need to stop taking these supplements to reduce your vitamin D levels. Too much vitamin D can cause damage to your organs and blood vessels.
To learn what your results mean, talk to your health care provider.
A vitamin D blood test measures the level of 25(OH)D in your blood. Abnormal levels of vitamin D can indicate bone disorders, nutrition problems, organ damage, or other medical conditions.
Showing results for common uses of vitamin d test Search instead for cpmmon uses of vitamin d test
A vitamin D test is used to screen for or monitor bone disorders. It is also sometimes used to check vitamin D levels in people with chronic illnesses such as asthma, psoriasis, and certain autoimmune diseases.
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