The National Pathology Exchange (NPEx) is the UK NHS’s national solution to the challenge of connecting all pathology laboratories together. It is unlike any other lab to lab system in the world due to its scale and success. There are over 60% of English Hospital Trusts and 100% of Scottish Health Boards in the UK connected to, or developing connections to NPEx. The system was designed so that every single laboratory can send and receive lab tests and results to every other laboratory whether NHS or private, across the whole country.