Refeyn

Refeyn is an Oxford University spinout founded in 2018 that develops and commercializes mass photometry instruments for single-molecule bioanalysis. Its instruments enable researchers to rapidly measure the mass of individual biomolecules — including proteins, antibodies, nucleic acids, and viral vectors such as AAVs — in their native solution state without labels. Refeyn's product portfolio includes the TwoMP, MyMassMP, SamuxMP, and KaritroMP mass photometers, serving pharmaceutical, biotech, and academic research customers globally in drug development, structural biology, and cell and gene therapy quality control.