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Methods for testing the concentration of an analyte in a body fluid

  • US 5,962,215 A
  • Filed: 04/05/1996
  • Issued: 10/05/1999
  • Est. Priority Date: 04/05/1996
  • Status: Expired due to Fees
First Claim
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1. A method for determining a corrected concentration of an analyte present in a fluid comprising:

  • providing a device comprising;

    a member comprising a first opening for receiving a fluid sample and a second opening for receiving fluid from the first opening;

    a restricted passageway communicating with the first opening and the second opening whereby the fluid sample flows from the first opening to the second opening;

    a detector for measuring a rate of flow of the fluid sample through the restricted passageway; and

    a porous matrix positioned in the second opening which comprises an indicator regent for measuring the concentration of the analyte in the fluid sample;

    applying the fluid to the first opening;

    measuring the rate of flow of the fluid through the passageway;

    measuring the analyte concentration from the indicator reagent;

    correlating said rate of flow to known hematocrit values;

    calculating a hematocrit correction factor from the correlation; and

    applying the hematocrit correction factor to the measured analyte concentration in the fluid to obtain a corrected concentration of the analyte.

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