COLORADO SPRINGS, Colo. (KRDO) -- During a concern about what doctors are calling a possible “twindemic” this winter, new studies suggest that your blood may reveal how likely you are to get COVID-19 ...

A doctor explains who truly needs a vitamin D supplement in the winter, how to tell if you're deficient, and when ...

Has your doctor urged you to have your vitamin D level checked recently? It happens a lot these days: Many doctors have made this test a standard part of a routine checkup. The only problem: Most ...

Some vitamin D tests may give misleading results despite progress made in recent years to improve the quality of these assays, according to the US Centers for Disease Control and Prevention (CDC).

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 ...

How to use an at-home vitamin deficiency test For any further questions, all reputable at-home tests will have instructions and a customer care line. Most vitamin deficiency tests require a blood ...

WASHINGTON — 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 ...

We tested the best vitamin deficiency tests from LetsGetChecked, Everlywell, and LabCorp, and our testers found them easy to use and informative. Learn more about the best vitamin deficiency tests ...

Vitamin D deficiency is common and is associated with risk factors like older age, certain medical conditions, and decreased ...

Imagine glancing in the mirror and noticing dull skin, flaky patches, or your hairline looking thinner than before. These might not be mere cosmetic issues — they could be early signals that your body ...

Beyond skeletal strength, these two forms of Vitamin D also play important roles in immune function, supporting the body's ...

But the problem is with the test, not the patients, according to a new study. The vast majority of African-Americans have plenty of the form of vitamin D that counts — the type their cells can readily ...