The present invention provides a method of storing data in a disposable, which is configured to be cooperated with an analytical device. The method is at least capable of 1) coupling the disposable to the analytical device, 2) utilizing the disposable to obtain a sample from a device that a patient makes a contact with, 3) operating the analytical device to obtain the respiratory data based upon the sample, and 4) operating electronics contained within the disposable to store (a) patient-specific identifier, (b) date and time stamp, and (c) session result data.