A test member suitable for use in a test device for testing of analyte concentration in a fluid to be applied thereto comprises a base member (2) having a working area (4) to which the fluid is to be applied, containing a reagent which is reactive to the said analyte to produce an electrical signal or...http://www.google.co.uk/patents/US6833110?utm_source=gb-gplus-sharePatent US6833110 - Test member
