<unk>  is the process of making a puncture in a vein, usually in the arm, with a cannula for the purpose of drawing blood. The procedure itself is known as a venipuncture, which is also used for intravenous therapy. A person who performs a<unk>  is called a<unk> st, although most doctors, nurses, and other technicians can also carry out a<unk> . In contrast, phlebectomy is the removal of a vein.<unk> es that are carried out in the treatment of some blood disorders are known as therapeutic<unk> es. The average volume of whole blood drawn in a therapeutic<unk>  to an adult is 1 unit (450-500 ml) weekly to once every several months, as needed.
Phlebotomy
Platelet transfusion
Plateletpheresis
Autosplenectomy
Splenectomy
Plasma coblation
Autologous blood therapy
Intravenous iron infusion