A reagent-less test strip system including a spectrometer; a test strip with a membrane for receiving a test sample, the membrane configured to separate the test sample into at least the following: one or more components that would interfere with measurement by the spectrometer and one or more components...http://www.google.com.au/patents/US20090303477?utm_source=gb-gplus-sharePatent US20090303477 - Reagent-Less Test Strip System for Analyte Measurement and Method of Use
