We know that growing numbers of people with type 1 diabetes are using do it yourself (DIY) closed loop systems (also known as open source APS).
While these technologies are not approved by regulatory bodies and are not commercially available, users of the technology say their HbA1c has improved as well as time in range. People have also said that diabetes has felt like less of a burden.
We're reviewing our position statement on DIY systems for people with type 1 diabetes and will be adding it to this page when it's ready. This is expected in early 2027.
People who wish to use DIY closed loop systems should continue to get support and care from their diabetes team. But healthcare professionals cannot recommend their use because they are not approved by regulatory bodies, and people using this technology must be aware that they do so at their own risk.
See our patient information on DIY closed loop systems.
