The present invention relates to a biosensor for point-of-care testing (POCT) whose detection sensitivity was remarkably improved by introducing to membrane strip chromatographic assay system a successive cross-flow procedure for immune reaction and enzymatic reaction. The present invention relates to...http://www.google.com.au/patents/US20040214253?utm_source=gb-gplus-sharePatent US20040214253 - Membrane strip biosensor system for point-of-care testing
