The document describes a new coupling kit from Anteo Diagnostics that provides everything needed to couple proteins to 1 μm magnetic particles in a one-step reaction. The kit offers benefits like greater sensitivity, reproducibility and reduced development times compared to standard coupling methods. It contains pre-activated magnetic particles, buffers and microcentrifuge tubes, and allows coupling of proteins like peptides, antigens and antibodies in under two hours via a simple mixing process. The coupled particles are then compatible with fluorescent and chemiluminescent assays.