Antibiotic sensitivity test: in vitro testing of bacterial cultures with antibiotics to determine susceptibility of bacteria to antibiotic therapy. A laboratory test which determines how effective antibiotic therapy is against a bacterial infections. Antibiotic sensitivity testing will control the use of Antibiotics in clinical practice Testing will assist the clinicians in the choice of drugs for the treatment of infections. Helps to guide the Physician in choosing Antibiotics The accumulated results on different pathogens their sensitivity will guide the physician in choosing empirical treatment in serious patients before the individual’s laboratory results are analyzed in the Microbiology laboratory. Reveals the changing trends in the local isolates. Helps the local pattern of antibiotic prescribing. PPT Prepared by Dr.Prince.C.P Department of Microbiology Mother Theresa PG&RIHS Pondicherry