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 ...

Vitamin D tests involve taking a blood sample to measure the vitamin D levels in your bloodstream. There are two forms of vitamin D in the blood: 25-hydroxy vitamin D, or calcidiol, and 1,25-dihydroxy ...

Vitamin D levels can be measured with a blood test. This test can indicate whether you have adequate levels, are at risk of a vitamin D deficiency, or have levels that are too high. Levels that are ...

Beyond the skeletal system, vitamin D plays a role in regulating immunity, reducing inflammation, supporting nerve and muscle ...

It's is easy to assume you get enough vitamin D naturally--you eat chocolate ice cream like a champ and frolic in the mountains, spending significant time in the sunshine. But then a routine blood ...

A growing body of research suggests that vitamin D may play a subtler role in mood than previously assumed, becoming most ...

ORLANDO, Florida — Inappropriate orders for the 1,25-dihydroxy vitamin D test have been increasing in recent years, according to the authors of a paper being presented at the College of American ...

We need vitamin D at various stages for our insulin pathways to work well, from insulin production in our pancreas to insulin resistance in our cells. So it’s no surprise that people newly diagnosed ...

Two large clinical trials published by The BMJ today show that boosting vitamin D levels in adults during the SARS-CoV-2 pandemic was not associated with protection against respiratory tract ...