Pharmacies in Wales will offer free risk assessments for the most common type of diabetes in an attempt to uncover the thousands of undiagnosed people who have the disease.
It is hoped that the assessments will identify those who are at risk of developing the condition over the next decade.
Around 66,000 - one in 50 - people in Wales have undiagnosed diabetes.
The scheme runs for a fortnight from 13 June, with assessments examining risk factors such as waist size, family history, ethnicity and body mass index.
Following these examinations, people will be given advice about improving their lifestyle if required.
Most of the people with diabetes in Wales have the type 2 version of the disease, which is often associated with being overweight.
The risk assessment campaign has been jointly organised by Diabetes UK Cymru and Community Pharmacy Wales.
Dai Williams, national director of Diabetes UK Cymru, said: “Diabetes is increasing rapidly in Wales and it is terrifying that one in 50 people here are thought to be living with undiagnosed diabetes.
“I would urge everyone concerned about whether they are at risk to visit their local pharmacy in mid June for a free assessment.
“The sooner diabetes is diagnosed, the sooner it can be controlled and the risk of its devastating complications, such as heart disease, strokes and kidney disease, reduced.”