Medically reviewed by Soma Mandal, MD A vitamin D test is a blood test that measures the level of vitamin D (calciferol) in ...

New research finds that taking a daily vitamin D supplement may help lower blood pressure, especially for older adults with ...

Their blood tests include the Vitamin D Test, the Testosterone and Cholesterol Test ... Blood testing is a valuable tool that provides a snapshot of your health by revealing the levels of certain ...

When you're being treated for osteoporosis, your doctor orders a blood or urine test. This reveals several markers -- levels of different enzymes, proteins, and other substances circulating in the ...

If you’re worried you might be deficient in vitamin B6, speak to your doctor, says Stephenson, who explains that they can administer blood tests to investigate what’s going on—and how to ...