A system for transferring medical data includes a computer network upon which an electronic medical record of a patient is stored. A mobile computer presents a bar code on a graphical display. A medical device is communicatively connected to a bar code scanner and receives patient information and mobile computer information from the bar code scanner. The medical device further performs a medical test to generate test result data. The test result data is transmitted to the mobile computer based upon the received mobile computer information. A method of medical data transfer includes receiving a medical data transfer request. A bar code is scanned to input the patient information and mobile computer information into the medical device. A medical test is performed with the medical device to produce test result data that is transmitted to the mobile computer based upon the mobile computer information.