Laboratory Functions. Diagnostic- detection of infectious agentsguidelines for treatmentinformation for individual casescollated information for general use (e.g. antimicrobial susceptibility summaries). Laboratory Functions (cont\'d). Epidemiological - information provided can be used to complement clinical informationTrack resistant isolates (e.g. MRSA)Follow trends in development of resistanceDetect or confirm outbreaks related to infectious agentsSupport control efforts.