How long should an alcohol prep pad dry before proceeding with venipuncture?

Allowing an alcohol prep pad to dry for approximately 30 seconds before proceeding with venipuncture is essential for effective disinfection. The drying time allows the alcohol to fully evaporate, which enhances its ability to kill bacteria and other microorganisms on the skin. If the alcohol remains wet during the venipuncture, it can cause a stinging sensation for the patient and may also dilute the blood sample. Properly allowing the alcohol to dry consequently contributes to a more successful procedure by ensuring both patient comfort and sample integrity.