The nanoparticles possess three major characteristics: 1) magnetism, which allows easy separation, 2) charge, which provides binding forces for ligands, and 3) high surface area for absorption.

The new detection method requires a small sample of body fluid and follows an enzyme-linked immunosorbent assay (ELISA) format. According to the researchers, the method can detect the allergy in minutes with higher sensitivity and selectivity than the gold standard.

The technology is scalable for multi-allergy indicators, offers an inexpensive assay for point of care detection, is minimally invasive and straightforward to perform for healthcare providers.

Full details can be found in the journal Nanotechnology.