A New Electrocatalytic System Based on Copper (II) Chloride and Magnetic Molecularly Imprinted Polymer Nanoparticles in 3D Printed Microfluidic Flow Cell for Enzymeless and Low-Potential Cholesterol Detection

•A new system for the enzymeless electrocatalytic detection of cholesterol has been proposed.•CuCl2 in acetonitrile served as an effective low potential electrocatalyst for cholesterol oxidation.•Magnetic molecularly imprinted polymer nanoparticles were synthesized and applied for selective cholesterol isolation.•The developed enzymeless electrocatalytic system was validated by using of model mixtures imitating the blood serum.•Microfluidic flow cell was fabricated by 3D printing to perform cholesterol determination.