These tubes are manufactured with a specific volume of gas removed from the sealed tube. Today, many companies sell vacuum tubes as the patent for this device is now in the public domain. Greiner Bio-One manufactured the first ever plastic evacuated blood collection tube in 1985 under the VACUETTE brand name. With evacuated or vacuum tubes Vacutainer blood bottles In the developing world, the evacuated tube system is the preferred method of drawing blood. Under certain circumstances, a syringe may be used, often with a butterfly needle, which is a plastic catheter attached to a short needle. The equipment consists of a plastic adapter, also known as a tube or needle holder/hub, a hypodermic needle and a vacuum tube.
Two common systems are Vacutainer (Becton, Dickinson and company) and Vacuette (Greiner Bio-One). Most blood collection in the US, UK, Canada and Hong Kong is done with an evacuated tube system. There are many ways in which blood can be drawn from a vein, and the method used depends on the person's age, the equipment available, and the type of tests required. Phlebotomy (incision into a vein) is also the treatment of certain diseases such as hemochromatosis and primary and secondary polycythemia.Ī 1996 study of blood donors (a larger needle is used in blood donation than in routine venipuncture) found that 1 in 6,300 donors sustained a nerve injury. Minute quantities of blood may be taken by fingerstick sampling and collected from infants by means of a heelprick or from scalp veins with a winged infusion needle. Other veins that can be used in the cubital fossa for venipuncture include the cephalic, basilic, and median antebrachial veins.
#Venipuncture sites diagram skin
The median cubital vein, which lies within the cubital fossa anterior to the elbow, is close to the surface of the skin without many large nerves positioned nearby. to collect blood for later uses, mainly transfusion either in the donor or in another person.īlood analysis is an important diagnostic tool available to clinicians within healthcare.īlood is most commonly obtained from the superficial veins of the upper limb.to remove blood due to excess levels of iron or erythrocytes ( red blood cells) or.to administer therapeutic treatments including medications, nutrition, or chemotherapy.
to monitor levels of blood components.to obtain blood for diagnostic purposes.Venipuncture is one of the most routinely performed invasive procedures and is carried out for any of five reasons: Any error in collecting the blood or filling the test tubes may lead to erroneous laboratory results. It is essential to follow a standard procedure for the collection of blood specimens to get accurate laboratory results. In veterinary medicine, the procedure is performed by veterinarians and veterinary technicians. In healthcare, this procedure is performed by medical laboratory scientists, medical practitioners, some EMTs, paramedics, phlebotomists, dialysis technicians, and other nursing staff. In medicine, venipuncture or venepuncture is the process of obtaining intravenous access for the purpose of venous blood sampling (also called phlebotomy) or intravenous therapy.
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