REDUCTION IN FIRST SLIDE BIAS AND IMPROVED ENZYME STABILITY BY INCORPORATION OF DIARYL TELLURIDES IN THE GRAVURE LAYER OF DRY-FILM, IMMUNOASSAY ELEMENTS

摘要

The present invention relates to a dry immunoassay analytical element for assaying a ligand, comprising a support bearing: (a) a label layer comprising an enzyme labeled ligand or an enzyme labeled receptor; (b) a spreading layer; (c) a receptor layer comprising a fixed concentration of an immobilized receptor for the ligand; and (d) a gravure layer comprising a diaryl telluride. A prefered embodiment of the present invention further comprises a vanadyl salt. The present invention further relates to a method for performing an assay using an element as described above.