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).

Should you get a blood test to see if you're deficient in vitamin D? It sounds like such a good idea, seeing as how most people don't get enough sunshine to make vitamin D themselves. And the tests ...

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 ...

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 — The nation’s largest medical lab company says it recently discovered and fixed a problem that led to inaccuracies in a small number of tests for vitamin D deficiency. Quest Diagnostics of ...

Are we overdoing it with vitamin D tests and supplements? Katie Ward, DNP, discusses recent findings that suggest that natural sunlight and a balanced diet might just be enough to satisfy our vitamin ...

Jane McClenaghan on how to make sure you’re getting just enough of this essential nutrient - without overdoing it ...

Higher levels of vitamin D than traditionally considered sufficient may help prevent COVID-19 infection — particularly in Black patients, shows a new single-center, retrospective study looking at the ...

If symptoms develop soon after taking a supplement, intolerance to supplement ingredients is also a possibility. Since ...

More than 40% of Americans are living with a silent deficiency, but experts warn that while the "Sunshine Vitamin" is essential for longevity, more isn't always better.

The global vitamin D testing market size is forecasted to reach USD 9.98 billion by 2030, expanding at an impressive compound annual growth rate (CAGR) of 5.1% from 2023 to 2030, according to a new ...

Several years ago, I started testing vitamin D levels in the serum of my dog and cat patients. What I found in pets that were on “balanced” commercial diets surprised me. Over 65% of my dog patients ...