Patent ID: 7640047
Filing Date: 2009-12-29
Classification: A61B,B01L,G01N

Abstract:
1. A test instrument comprising: a capillary for moving a sample liquid; a liquid pooling portion communicating with the capillary for retaining the sample liquid to be introduced into the capillary; a liquid introduction selector for selecting whether or not the sample liquid retained in the liquid pooling portion is introduced into the capillary; a detector for detecting whether or not an intended amount of sample liquid is supplied to the liquid pooling portion; and a reagent portion provided in the capillary for dissolution upon supply of the sample liquid to the capillary, and a first measurement electrode and a second measurement electrode for applying a voltage to a reaction system formed by the reagent portion and the sample liquid; wherein the detector includes a first detection electrode and a second detection electrode which are exposed to an inside of the liquid pooling portion at least partially, and whether or not an intended amount of sample liquid is supplied to the liquid pooling portion is determined by detecting whether or not electrical conduction through the sample liquid is provided between the first detection electrode and the second detection electrode, wherein the first detection electrode is electrically connected to the first measurement electrode, the second detection electrode being electrically connected to the second measurement electrode.