A Schilling test is also known as a Vitamin B12 absorption test. It was formerly used to determine whether a person was absorbing vitamin B12 normally. If not, then the test could pinpoint the cause ...

Imagine feeling tired as if you’ve run a marathon — every single morning — but you haven’t even left your bed! Or maybe your hands and feet keep tingling like tiny pin-pricks, but you shrug it off as ...

We tested the best vitamin deficiency tests from LetsGetChecked, Everlywell, and LabCorp, and our testers found them easy to use and informative. Learn more about the best vitamin deficiency tests ...

A complete blood count (CBC) is a common test to diagnose anemia by measuring red blood cell count, hemoglobin, and hematocrit levels. Iron deficiency is a common cause of anemia, and doctors may ...

Vitamin B12 deficiency can cause anemia, nerve damage, cognitive changes, and mood symptoms. Experts warn it’s often missed, especially in older adults.

Vitamin B12 deficiency can result in a host of symptoms, ranging from fatigue and brain fog to irritability and pins and needles. Despite having a normal B12 test result, some individuals may still ...