Although these studies have found success in implementing gold nanoparticles as in vitro biosensing platforms, further research is necessary to establish their biocompatibility, administration, and bioaccumulation in vivo. Another recent study fabricated magnetic nanoparticles coated with dextran to detect significant AD blood biomarkers, such as amyloid‐beta and phosphorylated tau.[10] This was accomplished by functionalizing the surface of the magnetic nanoparticles with antibodies against amyloid‐beta and phosphorylated tau. This evidence concerns the gene MAPT and Alzheimer disease.