The fluid that flows through the circulatory system (i.e. heart, arteries, capillaries, and veins) delivering oxygen and nutrients to the body's cells. The main components of blood are plasma (liquid), erythrocytes (red blood cells), leukocytes (white blood cells) and thrombocytes (platelets). A laboratory test, called a complete blood count (CBC), determines the number and type of blood cells present and a blood chemistry panel determines the quantities of various other substances in the plasma.
chemistry panel ; complete blood count (CBC) ; plasma