Patent ID: 8877038
Filing Date: 2014-11-04
Classification: G01N

Abstract:
1. An electrochemical assay for a phenol analyte in a body fluid sample wherein said sample, or fluid therefrom, is contacted with the working electrode of an electrode assembly comprising a working electrode, a counter-electrode, a voltage supply to said working and counter-electrodes and a current meter for determining the current between said working and counter-electrodes, and wherein a first compound capable of reversible oxidation and reduction is disposed at said working electrode, said first compound being capable in either an oxidized or a reduced form of binding to said phenol analyte, wherein said first compound in its oxidized or reduced form comprises a group of structure I where n is 0 or 1; Q is O, S, NH or NR′; C*—(C*—C*) R is an electron-donating or withdrawing substituent; and R′ is H or a group R, at least one group R′ being a group R.