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

The Vitamin D Blood Test (25-OH Vitamin D): Who, How, When, and Where Clinically speaking, things began to change in the 1970s when the blood test for vitamin D (known as the "25-OH vitamin D ...

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

They’ll label the tube of blood and send it to a lab. Some medicines, vitamins, and supplements can impact your test results' precision. These can include diuretics (water pills), antacids ...

The A1C level test can give false or inaccurate results in some people. Doctors say your A1C level can be falsely elevated ...

The 86-year-old man had previously been active and lived independently, his daughter Alison Taylor told ABC Radio, until a blood test revealed he had a slight deficiency in vitamin B6. Taylor said ...