CASE QTY. NONE — Directions: Dip test patch of a fresh strip into urine sample or pass through urine stream, 1-2 seconds only. Blot excess on a clean paper towel or tissue. Results should be compared at 40 seconds after exposure to urine. Low-carb dieters use these strips to monitor ketone output in urine which can be an indicator of diet success. Contact your doctor if you have any questions about the results.