Will the Q.E.D.® device work if it is stored at temperatures outside the range on the packaging?

Storing and using Q.E.D.® tests at room temperature (15-30°C, 59-86°F) insures optimal performance and a full shelf life. However, the Q.E.D.® test will work fine if exposed to temperatures outside that range for limited periods. We tested the Q.E.D.® device under a wide range of temperatures and storage conditions – simulating the inside of a vehicle glove box on a hot summer day (about 120°F) and the cold of North Dakota in January (about 0°F). In all cases, the test performed as it should. Before using a Q.E.D.® Saliva Alcohol Test exposed to extreme heat, allow the device to cool to room temperature; if the Q.E.D.® device is exposed to extreme cold, put it into a pocket to warm it up.