| abstract |
(57) Abstract: A substantially completely independent assay means for localizing an analyte suspected of being present in a sample to at least one predetermined location in a first sector. A first sector and a second sector containing control means for performing an assay for one or more analytes suspected of being present in the sample accessible to the reader and analyte location information; An optical disk adapted to be read by an optical reader, wherein the presence or absence of an analyte at the location can be determined by the reader using control means and location information. An apparatus is described. Depending on the nature of the assay, the disc may contain fluid storage means, fluid transfer means, such as one or more capillary ducts, valves, batteries, dialysers, columns, filters, sources of electric fields, The wiring portion or other conductive means, such as a metal surface adherend, is included. |