At-home vitamin D tests may provide insights into your health. When followed by a consultation with a doctor, it can be a first step in managing a common nutritional deficiency. Vitamin D helps you ...

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 ...

A vitamin D test measures your blood's vitamin D levels to see if they are too high or too low. Low vitamin D levels can ...

A D-dimer test measures how much D-dimer protein is in the blood. This protein is present when blood clots break down. A typical range is 0-0.50 milligrams per liter (mg/L) of blood. D-dimer is a ...

Swiss-based Roche announced this month that it has received U.S. regulatory clearance for a less-complex vitamin D test in the United States, which the company said opens the door to more efficient ...

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 ...

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).

Please provide your email address to receive an email when new articles are posted on . Most vitamin D tests are well calibrated, according to the CDC. With improved calibration, sample-specific ...