Finger-prick test for ketosis may monitor metabolic health

A finger-prick test measuring the glucose ketone index (GKI) could monitor metabolic and mitochondrial health in chronic diseases. The GKI, a ratio of blood glucose to ketones, may track how interventions like ketogenic diets and fasting improve metabolic status, potentially aiding in managing conditions linked to mitochondrial dysfunction. Further large clinical studies are needed to validate the GKI, establish disease-specific targets, and confirm its predictive value for disease risk and treatment response.