Your order comes with twenty-five temperature strips. These temperature strips can be used to test the validity of a human urine sample. Simply apply the temperature strips to a urine collection device after a urine sample has been collected. The temperature strip will show a green dot when it comes in contact with liquid that is between 90-100 degrees Fahrenheit. If no color dot appears, this means that the temperature reading is below 90 degrees Fahrenheit or above 100 degrees Fahrenheit.