Final answer:
Therapeutic phlebotomy is used to treat blood disorders such as polycythemia vera, hemochromatosis, and porphyria.
Step-by-step explanation:
Therapeutic phlebotomy is a procedure used to treat certain blood disorders. It involves removing a specific amount of blood from a patient's body to reduce the levels of certain substances in the blood. This procedure is commonly used in the treatment of conditions such as polycythemia vera (a disorder characterized by excessive production of red blood cells), hemochromatosis (a condition that causes the body to absorb too much iron), and porphyria (a group of rare genetic disorders that affect the nervous system and skin).