what is a venipuncture blood test for
Video of venipuncture (blood draw or collection) using the BD Vacutainer product. In medicine, venipuncture, venopuncture or venepuncture is the process of obtaining intravenous access for the purpose of intravenous therapy or for blood sampling of venous blood.his vein lies close to the surface of the skin, and there is not a large nerve supply. Minute quantities of blood may be taken by fingersticks sampling and collected from infants by means of a heel stick or from scalp veins with a winged infusion needle.