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

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

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 ...

What Is a Phosphate Blood Test? A phosphate test measures the amount ... Issues related to calcium can be a sign of low vitamin D, or they may include: Your doctor will give you instructions ...

Over the past few decades, the "normal" blood level of vitamin D (25-OH vitamin D) was based on the amount needed to keep PTH from becoming abnormally high. Again, PTH at high levels can cause ...

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

While certain foods can provide this vitamin, many specialists and the UK government advise taking a daily supplement from ...

Vitamin C supports our immune systems, helps our bodies heal wounds, protects our joints and contributes to collagen ...

Besides back pain, being deficient in the vitamin may also lead to other symptoms such as tiredness, increased susceptibility to illness, feelings of anxiety and delayed healing of wounds ...