What is the purpose of using an antiseptic before a blood draw?

Using an antiseptic before a blood draw plays a critical role in infection control and patient safety. The primary purpose of applying an antiseptic is to sterilize the collection area. This action reduces the presence of microorganisms on the skin's surface, which can cause infections if they enter the body during the venipuncture procedure. By preventing contaminants from entering the bloodstream, the risk of post-draw complications and healthcare-associated infections is significantly decreased.

In a clinical setting, it's essential for phlebotomists to follow this practice to ensure both patient safety and the integrity of the blood samples collected for testing.