Constant fatigue, low energy, or a general feeling of weakness can often be symptoms of an underlying iron deficiency. Iron is a crucial mineral responsible for producing hemoglobin, which carries oxygen in your blood and is essential for energy production throughout your body.
A Ferritin test measures the amount of ferritin in your blood, a protein that stores iron. This test is the most accurate indicator of your body's iron stores and can reveal if your iron levels are low, even before you develop anemia.
Checking your Ferritin levels can help: