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AUTOMATED METHOD AND APPARATUS FOR DETECTING ERRONEOUS SAMPLE COLLECTION IN CLINICAL ASSAYS

  • US 20090173641A1
  • Filed: 12/19/2008
  • Published: 07/09/2009
  • Est. Priority Date: 12/20/2007
  • Status: Active Grant
First Claim
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1. An automatic method for determining that a collection device with an anticoagulant was incorrectly used to collect a blood sample for analysis of analyte species in a sample where the correct collection device for the sample omits a selected anticoagulant, the method comprising;

  • (a) adding a sample from a collection device to an analyzer instrument having means for analyzing species that include a monovalent ion and divalent cation and at least one other analyte;

    (b) determining the concentration of monovalent ion, divalent cation and one or more other analyte in said sample;

    (c) comparing the monovalent ion concentration to a predetermined upper threshold value and the divalent cation concentration to a predetermined lower threshold value, and where both said threshold concentration values are surpassed said analyzer instrument flags or suppresses concentration values for the monovalent ion, divalent cation and one or more of the other analyte species in said sample, and thereby(d) reporting by said analyzer that the sample was collected with the wrong anticoagulant.

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