In medicine, a person’s blood-test results are compared with the average range in a population. But results are highly individual and tightly regulated around a person’s own stable values. Changes to ...

Take glycated hemoglobin (HbA1c) for example—the HbA1c test revolutionized the way we diagnose and manage diabetes because it ...

The anion gap blood test measures the acid-base and electrolyte balance in the blood. Results can show whether there is an imbalance in a person’s pH levels, which may be making the blood too acidic ...

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 ...

A quiet warning signal for Crohn’s disease may show up in your blood years before your stomach ever hurts. That is the message from new research out of Sinai Health, where scientists report a blood ...