A 25-hydroxy vitamin D test measures how much vitamin D is in someone's blood. Learn what to expect, what the results mean, and how to boost vitamin D levels.

Clinical laboratories require accurate and precise 25-hydroxyvitamin D (25-OHD) immunoassays to allow comparison of patient results with published decision limits. Automated immunoassays, ...

Researchers have found that vitamin D2 is equally as effective as vitamin D3 in maintaining 25-hydroxyvitamin D status. Vitamin D2 has been the main stay for the prevention and treatment of ...

A comprehensive study of older adults in Swedish nursing homes found no connection between vitamin D deficiency and ...

The 25-hydroxy vitamin D blood test can determine vitamin D levels. The results may be reported in nanograms per milliliter ...

The most accurate measurement of your vitamin D levels is a 25-hydroxy vitamin D test. It measures your blood level of 25-OH vitamin D, or the form of D that is converted and used by your body.

Vitamin D status was decided based on the serum levels of 25-hydroxyvitamin D, with deficiency defined as 25-hydroxyvitamin D levels below 30 nmol per liter, while concentrations between 30 and 50 ...

Higher concentrations of vitamin D, specifically serum 25-hydroxyvitamin D (25(OH)D), are associated with improved survival with chronic obstructive pulmonary disease (COPD), according to a study ...

Although no causative relationship has been proven between blood 25-hydroxyvitamin D levels and numerous illnesses, these links have resulted in widespread vitamin D supplementation and increases ...