The present invention provides a test strip for detecting, in a sample from a human subject, the presence of an antigenic substance which comprises a solid support, an antibody directed against the antigenic substance bound to a first discrete area on the solid support, an anti-human antibody bound to...http://www.google.com.au/patents/US5447837?utm_source=gb-gplus-sharePatent US5447837 - Multi-immunoassay diagnostic system for antigens or antibodies or both
