Random blood sugar test. A blood sample will be taken at a random time. Blood sugar values are expressed in milligrams per deciliter (mg/dL) or millimoles per liter (mmol/L). Regardless of when you last ate, a random blood sugar level of 200 mg/dL (11.1 mmol/L) or higher suggests diabetes, especially when coupled with any of the signs and symptoms of diabetes, such as frequent urination and extreme thirst.
People with T1D work with an endocrinologist to determine proper insulin-to-carb ratio. This ratio is the amount of insulin needed to balance the intake of a certain amount of carbohydrates (typically measured in grams). Measuring the amount of carbohydrates and factoring the insulin to carb (I:C) ratio helps maintain stable blood-sugar levels after eating.
Change in fasting plasma glucose (A), 2 h post-oral glucose tolerance test (B), and homeostasis model assessment (HOMA-B) insulin secretion (C) during the 16-year follow-up in the Whitehall II study. Of the 6,538 people studied, diabetes developed in 505. Time 0 was taken as the diagnosis of diabetes or as the end of follow-up for those remaining normoglycemic. Redrawn with permission from Tabák et al. (80).
Recently, a small clinical trial in England studied the effects of a strict liquid diet on 30 people who had lived with Type 2 diabetes for up to 23 years. Nearly half of those studied had a remission that lasted six months after the diet was over. While the study was small, the finding offers hope to millions who have been told they must live with the intractable disease.