A vitamin D test is a blood test that measures the level of vitamin D (calciferol) in your blood. It can indicate whether the vitamin D levels in your body are low or high. Low vitamin D levels can ...

It’s Wellness Wednesday, and this week’s focus is on vitamin D and its role in overall health. Many people assume they’re getting enough during the summer months, but that’s not always the case. We ...

There are two forms of vitamin D in the blood: 25-hydroxy vitamin D, or calcidiol, and 1,25-dihydroxy vitamin D, or calcitriol. Tests will measure the amount of 25-hydroxy vitamin D in the blood. This ...

Vitamin D tests certified by the U.S. Centers for Disease Control and Prevention (CDC) Clinical Standardization Programs (CSP) are well calibrated overall, according to a new study presented Sunday at ...

Don't be surprised if your doctor orders a vitamin D test during your next physical. Blood tests to check levels of the so-called sunshine vitamin are on the rise as doctors and patients react to ...

Lauren Silva, a freelance writer in New York City, believes in feeling good in your body and making that experience accessible to everyone across generations. The proof is in her ever-piling browser ...

Low levels of vitamin D seem to raise your risk of heart attack but scientists are still figuring out why—and whether ...

As a woman, prioritizing your health and well-being is essential to living a long and productive life. One way to do this is to ensure your diet includes sufficient vitamins and minerals. At the top ...

Swiss-based Roche announced this month that it has received U.S. regulatory clearance for a less-complex vitamin D test in the United States, which the company said opens the door to more efficient ...