the medical procedure for drawing a sample of venous blood into a vacuum tube is known as
Venipuncture In medicine, venipuncture or venepuncture is the process of obtaining intravenous access for the purpose of intravenous therapy or for blood sampling of venous blood. In healthcare, this procedure is performed by medical laboratory scientists, medical practitioners, some EMTs, paramedics, phlebotomists, dialysis technicians, and other nursing staff.[1] In veterinary medicine, the procedure is performed by veterinarians and veterinary technicians.