Patent ID: 6071392
Filing Date: 2000-06-06
Classification: C12Q,Y10S

Abstract:
A cholesterol sensor comprising an electrically insulating base plate, an electrode system having a measuring electrode and a counter electrode on said base plate, an electrode coating layer covering said electrode system and a reaction reagent layer on said electrode coating layer, said electrode coating layer covering 0.4 to 2.5 mg/cm.sup.2 per unit area of said electrode system, wherein said reaction reagent layer comprises at least an enzyme for catalyzing cholesterol oxidation, an enzyme having a cholesterol ester hydrolyzing activity and a surfactant, said electrode coating layer comprises at least one compound selected from the group consisting of water-soluble cellulose derivatives and saccharides and is contained at such concentration that imparts sufficient viscosity to a sample solution for enabling it to hinder invasion of said surfactant into said electrode system when said electrode coating layer is dissolved in said sample solution supplied to said sensor.