Immunoassay test device with thread control element

Details Immunoassay test device with thread control element Immunoassay test device with thread control element

G - Physics

01

N

150/26, 167/43

G01N 33/53 (2006.01) G01N 21/77 (2006.01) G01N 33/52 (2006.01) G01N 33/535 (2006.01) G01N 33/543 (2006.01)

Patent

CA 2035595

ABSTRACT OF THE DISCLOSURE A test device for use in immunoassay methods wherein a liquid test mixture is passed through a porous solid support and wherein analyte that becomes immobilized at the surface of said solid support is determined by reaction with a reagent system to produce an optical response, e.g., the appearance of color, on said surface. The test device comprises a thread in liquid flow contact with and extending across the test surface; the thread being incorporated with a control reagent that reacts with one or more components of the reagent system to produce an optical response on the thread independent of the presence of the analyte in the test medium.

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