Testing for ketones is relevant for people with type 1 diabetes.
In type 1 diabetes, a lack of insulin can lead to higher levels of ketones which in turn could lead to a dangerous state called ketoacidosis.
Diabetes UK recommends people with type 1 diabetes test for ketones if blood glucose levels become high –usually above 15 mmol/L.
Testing for ketones in this way can help you to get advice and treatment before the level of ketones becomes dangerous.
Testing for ketones: http://www.diabetes.co.uk/diabetes_care/testing-for-ketones.html