The retractable lancet is used most often for safety reasons. The retractable lancet is spring loaded, the lancet retracts into the body of the device after skin puncture. All lancets are sterile and for one time use only. Needles for venipuncture- Needles are available in many gauges and lengths. The size of vein, patient age, the amount of blood needed and personal preference are used to select the needle for venipuncture.
All needles are sterile and for one time use only.
Because lasers represent a needle-free method of blood collection and decrease the risk of blood exposure to health care professionals, this method may lead to cost savings over time. References Editorial Board. College of American Pathologists. Arch Pathol Lab Med.