Aim: This study aimed to describe routines for screening, treatment, and follow‐up for prediabetes at primary health care centres in Region Stockholm, Sweden.Methods: The study had a cross‐sectional design. We sent a questionnaire about prediabetes screening, treatment, and follow‐up to diabetes nurses working at primary health care centres in Region Stockholm. Data collection started in October 2019 and ended in June 2021.Results: A total of 84 of the 224 centres that received an invitation responded (37.5%). Routines for screening, treatment, and follow‐up varied widely. This variation meant that people with prediabetes received different care, and the care depended on clinical practice routines at the primary health care centre they attended.Conclusions: A first step toward more consistent, adequate and equitable care should involve developing national and regional guidelines that include a clear and systematic approach to prediabetes screening, treatment and follow‐up. Sufficient funding and human resources will be crucial to implementing these guidelines in primary care to help prevent type 2 diabetes and its complications. Copyright © 2022 John Wiley & Sons.