Fluidics-based assay devices

G - Physics – 01 – N

Patent

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Details

G01N 33/543 (2006.01) B01L 3/00 (2006.01)

Patent

CA 2495190

A fluidics-based assay device for detecting the presence or quantity of an analyte residing in a test sample is provided. The device utilizes a self- calibrated magnetic binding assay format (e.g., sandwich, competitive, etc.) that includes detection probes capable of generating a detection signal (e.g., fluorescent non-magnetic particles) and calibration probes capable of generating a calibration signal (e.g., fluorescent magnetic particles). The amount of the analyte within the test sample is proportional (e.g., directly or inversely) to the intensity of the detection signal calibrated by the intensity of the calibration signal. It has been discovered that the fluidics- based device of the present invention provides an accurate, inexpensive, and readily controllable method of determining the presence of an analyte in a test sample.

L'invention a trait à un dispositif de dosage se fondant sur la fluidique, destiné à déterminer la présence ou la quantité d'une substance à analyser dans un échantillon pour essai. Le dispositif utilise un format de dosage par fixation magnétique autocalibré (par ex., de type sandwich, compétitif, etc.), qui fait appel à des sondes de détection pouvant générer un signal de détection (par ex., des particules non magnétiques fluorescentes) et des sondes de calibrage pouvant générer un signal de calibrage (par ex., des particules magnétiques fluorescentes). La quantité de substance à analyser se trouvant dans l'échantillon pour essai est proportionnelle (par ex., directement ou inversement) à l'intensité du signal de détection calibrée par l'intensité du signal de calibrage. Le dispositif se fondant sur la fluidique de la présente invention est apparu comme étant un moyen précis, bon marché et facilement contrôlable de déterminer la présence d'une substance à analyser dans un échantillon pour essai.

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