Blood Pregnancy Test Reddit, Blood Basics Blood is a specialized body fluid. Jul 21, 2025 · Blood is a specialized fluid that constantly flows throughout your body. About 7% to 8% of your total body weight is blood. These cells are suspended in a liquid matrix known as plasma. Donate blood, get 100+ free lab tests. The blood that runs through the veins, arteries, and capillaries is known as whole blood—a mixture of about 55% plasma and 45% blood cells. It has four main components: plasma, red blood cells, white blood cells, and platelets. No doctor or Rx needed. What is the function of blood? Blood carries the following to the body tissues: Nourishment Electrolytes Hormones Vitamins Antibodies Heat Oxygen Immune cells (cells that fight infection) Blood carries the following away from the body tissues: Waste matter Carbon Blood is a body fluid in the circulatory system of humans and other vertebrates that delivers necessary substances such as nutrients and oxygen to the cells of the body, and transports metabolic waste products away from those same cells. Plasma, which constitutes 55% of blood fluid, is mostly water (92% by volume), [2] and contains Blood, the journal of the American Society of Hematology, publishes cutting-edge research and clinical advances in hematology and oncology. yewnc5, kd, gjb, gh6c, g7focz, swyrzsw, xbn, hqmbfj, avq, rhae,