Multiplex flow immunoassays with magnetic particles as solid...

G - Physics – 01 – N

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G01N 33/553 (2006.01) G01N 15/10 (2006.01) G01N 33/537 (2006.01) G01N 33/543 (2006.01) G01N 33/58 (2006.01)

Patent

CA 2260991

Heterogeneous assays for different analytes in a single biological sample are performed simultaneously in a multiplexed assay that combines flow cytometry with the use of magnetic particles as the solid phase and yields an individual result for each analyte. The particles vary in size to encompass distinct size ranges that are distinguishable by flow cytometry, the particles in each size range carrying an assay reagent bonded to the particle surface that is distinct from the assay reagents of particles in other size ranges. The magnetic particles facilitate separation of the solid and liquid phases, permitting the assays to be performed by automated equipment.

L'invention concerne des dosages hétérogènes pour différents analytes dans un seul échantillon biologique, qui s'effectuent simultanément dans un dosage multiplex qui combine la cytométrie de flux et l'utilisation de particules magnétiques comme phase solide et produit un résultat séparé pour chaque analyte. La taille des particules varie selon différentes plages de tailles distinctes qui sont détectables par la cytométrie de flux, les particule de chaque plage de tailles portant un réactif de dosage lié à la surface de celles-ci et différent des réactifs de dosage des particules appartenant à une autre plage de tailles. Les particules magnétique facilitent la séparation des phases liquide et solide, ce qui permet la réalisation des dosages par un équipement automatisé.

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