The present invention is to provide a simple membrane assay method for detecting or quantitating an analyte in a specimen sample using an assay device equipped with a membrane bound with a capture-substance to capture the analyte, comprising the steps of filtering a specimen sample using a filter, dropping...http://www.google.de/patents/US7579195?utm_source=gb-gplus-sharePatent US7579195 - Simple membrane assay method and kit
