What percentage of the blood is red blood cells? Anatomy & Physiology Circulatory and Respiratory Systems Blood/Hematologic System 1 Answer Tarik Apr 17, 2016 55% Answer link Related questions What is the purpose of AST/ALT blood test ? What causes anemia? Blood taken from an adult male patient indicates the following: Erythrocyte count:... What is the normal white blood cell count in a healthy female adult? What is the difference between monocytes, neutrophils, eosinophils, lymphocytes, and basophils? Which type of blood cells are the most abundant in a healthy human body? How are the different types of blood types formed? What does the Rh factor do? Where in the body are worn-out and damaged red blood cells destroyed? The soft tissue inside some of the bones is called what? Do circulating red blood cells have a nucleus? See all questions in Blood/Hematologic System Impact of this question 2639 views around the world You can reuse this answer Creative Commons License