A method and apparatus for non-invasively measuring a biological attribute, such as the concentration of an analyte, particularly a blood analyte in tissue such as glucose. The method utilizes spectrographic techniques in conjunction with an improved subject-tailored calibration model. In a calibration...http://www.google.com/patents/US6157041?utm_source=gb-gplus-sharePatent US6157041 - Methods and apparatus for tailoring spectroscopic calibration models
