The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 24, 2012
Filed:
Jun. 03, 2004
Gary H. Krauth, Hopedale, MA (US);
David J. Ledden, Medway, MA (US);
Gary H. Krauth, Hopedale, MA (US);
David J. Ledden, Medway, MA (US);
Siemens Healthcare Diagnostics Inc., Tarrytown, NY (US);
Abstract
This invention is directed to a lateral flow assay for detecting the presence of an analyte in a liquid test sample. The lateral flow assay represents an improvement in the ability to accurately and with high fidelity to detect the presence or absence of a target analyte in a liquid sample, in part, by encompassing a reference region of immobilized, non-diffusible analyte that allows for detection of any factors that interfere with the interaction and binding of the analyte to the labeled capture reagent. Any influences on the interaction and binding of the analyte that is free in solution in the liquid test sample to its complementary labeled reagent will be encountered in parallel in the binding between the immobilized analyte in reference region to the labeled reagent as it diffuses through the reference region. In one embodiment, the lateral flow assay of the invention is a urine-based human Chorionic Gonadotropin (hCG) assay.