This is a test strip that easily measures ketones in urine. Instructions are also included. It has been opened and stored in the refrigerator. Would you like to try it? Please check the photos for the remaining amount. - Product Name: Ketone Test Strips - Quantity: 100 strips - How to Use: Test strips for measuring ketones in urine - Test Time: Wait 40 seconds - Measurement Range: Measured by color change from Neg. to high concentration - Manufacturing Date: June 2022 Thank you for looking.