Yeah, Because your blood tells A LOT about your current condition. Blood tests are to
Evaluate how well organs—such as the kidneys, liver, thyroid, and heart—are working
Diagnose diseases and conditions such as cancer, HIV/AIDS, diabetes, anemia (uh-NEE-me-eh), and coronary heart disease
Find out whether you have risk factors for heart disease
Check whether medicines you're taking are working
Assess how well your blood is clotting
Evaluate how well organs—such as the kidneys, liver, thyroid, and heart—are working
Diagnose diseases and conditions such as cancer, HIV/AIDS, diabetes, anemia (uh-NEE-me-eh), and coronary heart disease
Find out whether you have risk factors for heart disease
Check whether medicines you're taking are working
Assess how well your blood is clotting