Complete blood count (CBC)

Blood is a specialized body fluid. It has four main components: plasma, red blood cells, white blood cells, and platelets. RBCs are the abundant cells in the blood that consist of a protein called hemoglobin, which helps transport oxygen throughout the body. WBCs form part of the immune system that helps protect the body against infections and other diseases. Platelets are tiny blood cells that help form clots to stop bleeding after an injury. As these blood cell types perform vital functions,