Simultaneous detection of two tumor markers using electrochemical immunosensor based on ultrathin metal–organic framework derived nanosheets as redox probes

Ultrathin metal–organic framework derived nanosheets (Cu/Co-UMOFNs@Au NPs) were designed for the first time as dual-catalytic multiple-label sandwich immunosensor for simultaneous detection of alpha fetoprotein (AFP) and cancer embryo antigen (CEA).