Ketostix The strips provide a fast, convenient way of testing urine for the presence & concentration of acetoacetic acid (ketone). This substance when found in the urine provides information on carbohydrate & fat metabolism. Acetoacetic acid can be found in the urine from diabetics & is more commonly referred to as a "ketone body." Use of Ketostix Reagent Strips can alert you & your to changes in your condition for which adjustments in your diet and/or medication may be needed. Carefully follow the testing schedule your doctor or educator establishes. Reagents: 7.1% w/w Sodium Nitroprusside; 92.9% w/w Buffer