公开(公告)号：US20210275979A1

公开(公告)日：2021-09-09

申请号：US17194713

申请日：2021-03-08

Applicant: IDEXX Laboratories, Inc.

Inventor： Pamela Ann Cacavas ,  Lucius S. Fox ,  Robert W. Lachapelle ,  Wendy O'Malley LePage ,  Evan M. Peck ,  Dominic Pelletier ,  Eric Allen Steva ,  Murthy V.S.N. Yerramilli

IPC: B01F9/00 ,  B01L3/00

Abstract: A method using a chemical analyzer for removing a component of a liquid sample which may interfere with a test performed on a test assay includes the steps of adding the liquid sample to a sample cup, transferring a volume of the liquid sample to a mixing cup containing an IMAC (Immobilized Metal Affinity Chromatography) resin containing porous beads to form a sample/resin solution in the mixing cup, using a pipette of the chemical analyzer to repeatedly aspirate the sample/resin solution into a disposable pipette tip of the pipette and expelling the sample/resin solution from the pipette tip into the mixing cup to achieve a mixed sample/resin solution in the mixing cup, and allowing the mixed sample/resin solution in the mixing cup to rest undisturbed so that the interfering component of the liquid sample adheres to the porous beads and the beads settle to a bottom portion of the mixing cup, resulting in a refined liquid sample devoid of the interfering component and occupying an upper portion of the mixing cup for later dispensing on the test assay.