Patent NZ-701972-A (NZ)
Title: Test strip and detecting device
Inventor: TIEN-TSAI HSU
IPC: G01N33/493
Filed: 2013-06-04
Abstract: A test strip used with an electrochemical instrument to detect a specimen comprises at least one specimen path comprising at least one inlet end and at least one discharge end; an electrode set having at least a part thereof disposed in the at least one specimen path with the electrode set comprising a first electrode, a second electrode and at least one reference electrode; and a redox reagent disposed in the at least one specimen path, the redox reagent at least comprising a redox pair, with the redox pair comprising potassium ferricyanide and potassium ferrocyanide. When the specimen enters the at least one specimen path, the redox pair dissolves and generates an electrochemical redox reaction for generating a first impulse signal when the specimen is in contact with the first electrode and the at least one reference electrode and generating a second impulse signal when the specimen is in contact with the second electrode and the at least one reference electrode, thereby obtaining a flow time of the specimen according to the first impulse signal and second impulse signal, and then obtaining a viscosity of the specimen according to the flow time. A detection method using an electrochemical instrument to detect a specimen is disclosed. The detection method comprises providing the above described test strip; providing a voltage to the electrode set; receiving the specimen in the at least one specimen path; dissolving the redox pair in the specimen and generating an electrochemical redox reaction at the same time; recording a first impulse signal generated when the specimen is in contact with the first electrode and the reference electrode, and a second impulse signal generated when the specimen is in contact with the second electrode and the reference electrode; and using the first impulse signal and the second impulse signal to obtain a flow time of the specimen according to the first impulse signal and the second impulse signal, and then obtaining a viscosity of the specimen according to the flow time. A detection method using an electrochemical instrument to detect a specimen is disclosed. The detection method comprises providing the above described test strip; providing a voltage to the first electrode, the another second electrode, and the working electrode; receiving the specimen in the first specimen path and the another second specimen path; dissolving the redox pair in the specimen and generating an electrochemical redox reaction at the same time; recording a first impulse signal generated when the specimen is in contact with the first electrode and the first reference electrode, a second impulse signal generated when the specimen is in contact with the first reference electrode and the working electrode, and a third impulse signal generated when the specimen is in contact with the first reference electrode and the another second electrode; using the first impulse signal, the second impulse signal, and the third impulse signal to obtain a flow time of the specimen; providing a reaction voltage to the working electrode; enabling an electrochemical reaction between the reaction reagent and the analyte of the specimen; using the electrochemical reaction to calculate an uncorrected concentration of the analyte; and using the flow time to correct the uncorrected concentration of the analyte.