Jehovah's Witnesses
Giving assistance to witnesses presents a dilemma to the doctor, dedicated to preserving life and health through all available techniques. The witnesses do not accept blood, packed red blood cells, white blood cells or platelets in homologous or autologous transfusions. They usually take legal steps to exempt the medical staff from civil liability regarding the informed rejection of the blood. According to the Alcer Magazine, organ donation should not be governed by religious precepts but by their own conscience, unless the transplant to which it gives rise implicitly involves the transfer of blood from one body to another. Thus, the donation of organs such as the cornea is never a problem for either the donor Jehovah's Witness or the receiver. Yes the marrow and renal donation only in the case that it is made by a living being. The Jehovah's Witness is in a position to donate kidneys after death or to receive them from a deceased, but becomes alert when it comes to doing so among living beings, even from parents to children. The first transplant without blood transfusion was performed at the Italian Hospital of the Federal Capital in 2001. Last month at the Private Hospital of Rosario (HPR), the first transplant was performed without blood transfusion to a Jehovah Witness from Salta, who suffered from a fulminant hepatitis.
https://www.eltribuno.com/salta/nota/2018-7-7-22-8-0-lideres-religiosos-de-salta-avalan-la-donacion-de-organos-por-ser-un-acto-de-amor