The invention relates to devices for performing single step assays for the determination of the presence or absence of an analyte in a liquid sample, and methods of determining the presence or absence of such analytes using such devices. Devices disclosed comprise a labeled analyte-binding reagent reversibly-immobilized...http://www.google.ca/patents/US7632687?utm_source=gb-gplus-sharePatent US7632687 - Hybrid phase lateral flow assay
