A vitamin D test measures the levels of vitamin D in your blood and can help diagnose vitamin D deficiency ... test is more accurate than a lipid panel test, especially for people with certain ...

You could just be short on sleep, or you could have a vitamin deficiency (or something else ... A simple blood test can measure the amount of 25-hydroxyvitamin D you have circulating in your ...

Vitamin B12 ... of vitamin B12 deficiency in adults. Groups most at risk of B12 deficiency Diagnosis If your doctor suspects you may have a B12 deficiency, they can do a lab test to check B12 ...

Vitamin D is essential for bone health and immune function, but its deficiency may be linked to higher cancer risk. While vitamin D deficiency has been linked to an increased risk of certain ...

Some of the most common nutrient deficiencies are B6, B12, D, iron, and calcium. If you're deficient in vitamin B12 you might experience irritability, fatigue, and canker sores. An iron deficiency ...