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Methods of concentrating an analyte

  • US 8,735,055 B2
  • Filed: 12/12/2008
  • Issued: 05/27/2014
  • Est. Priority Date: 06/21/2007
  • Status: Active Grant
First Claim
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1. A method of concentrating an analyte present in a fluid sample provided to a receptacle having a plurality of interconnected chambers, the method comprising the steps of:

  • (a) forming a first volume in a first chamber of the receptacle, the first volume comprising the fluid sample and a liquid reagent containing a solid support;

    (b) immobilizing the analyte on the solid support;

    (c) moving an aliquot of the first volume from the first chamber to a directly connected second chamber of the receptacle by applying one or more compressive forces to a flexible portion of the first chamber with one or more actuators, wherein the volume capacity of the second chamber is less than the first volume;

    (d) isolating the analyte immobilized on the solid support in the second chamber;

    (e) moving non-analyte components of the sample from the second chamber to a directly connected waste chamber of the receptacle by applying a compressive force to a flexible portion of the second chamber with an actuator;

    (f) repeating steps (c) through (e) one or more times while retaining immobilized analyte in the second chamber, thereby accumulating concentrated analyte in the second chamber; and

    (g) after step (f), moving the concentrated analyte accumulated in the second chamber to a directly connected third chamber by applying a compressive force to a flexible portion of the second chamber with an actuator.

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