The document summarizes recommendations from the 2016 American Diabetes Association guidelines. It provides criteria for diagnosing diabetes and prediabetes based on HbA1c, fasting plasma glucose, and oral glucose tolerance test results. It recommends screening for type 2 diabetes in asymptomatic adults aged 45 or older who are overweight or have additional risk factors, as well as screening children who are overweight and have certain risk factors. Guidelines for screening gestational diabetes and type 1 diabetes are also presented.