The development of point of care (POC) for the detection of milk casein (CAS), bovine serum albumin (BSA), and egg chicken albumin (OVA), that commonly causes allergies in people worldwide, was described by Anfossi et al. The multiplex lateral flow immunoassay (xLFIA) was produced using AuNPs and silver nanoparticles (AgNPs) modified with antibodies against casein, ovalbumin, and hazelnut allergenic proteins to produce three differently colored specific probes [107]. This evidence concerns the gene ALB and allergic disease.