What is blood testing?

Blood testing refers to a variety of laboratory analyses performed on a blood sample to assess a person's health status, diagnose diseases, or monitor medical treatments. These tests can measure levels of different substances in the blood, such as glucose, cholesterol, hormones, or the presence of pathogens. Blood tests are essential tools for doctors to detect conditions like anemia, infections, diabetes, and heart disease. The process typically involves drawing a small amount of blood from a vein, which is then analyzed in a laboratory.