This article was reviewed by Darragh O’Carroll, MD. Blood tests are one of the most widely used and helpful tools in modern medicine. Whether ordered in a clinic or done through an at-home kit, they ...

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 ...

Biomarker lab tests typically take a biological sample, like blood, to evaluate certain biomarkers, which are measurable indicators of your health. Whether you're checking your hormones, thyroid, or ...