Having an accurate Medical Device Calibration means your medical device can give you and your patients an accurate measurement (and functionality) of each device in the healthcare setting. Having an accurate Medical Device Calibration will also allow your Diagnostic/Therapeutic medical device to produce an accurate measurement, therefore minimizing errors and improving overall quality of care for patients. Each medical device must be properly calibrated according to Institutional and/or National standards, as set forth by professional or technical organizations (ISO, IEC, etc.) to ensure the devices are consistent for routine checkups and/or critical procedures. This Guide will discuss how critical it is to have an accurate medical device calibration, what types of methods are available, and what are the best practices for maintaining the greatest possible functionality. Healthcare Professionals, Biomedical Engineers and Clinic Managers must know the medical device calibration schedules, quality assurance checks, and regulatory requirements relative to safe and accurate Medical Device Calibration. By ensuring your medical devices are calibrated accurately, healthcare professionals will be able to increase the reliability of their devices, improve device performance and safety and enhance the overall quality of care to their patients, or in the case of a clinic manager, to improve operational efficiency.