Asepsis means being free from micro-organisms. Aseptic technique is the process of preventing susceptible sites, such as a wound, from being contaminated. Asepsis is performed during clinical procedures that involve contact with an invasive device or susceptible site on the patient. To minimise risk of infection, clinical procedures must be performed in a way that prevents contamination. Procedures that bypass the bodyu2019s normal defences, such as inserting an intravenous line, provide opportunities for micro-organisms to access susceptible tissues where they can cause infection.