Nova Vet Ketone Test Strips are designed for use with the Nova Vet Blood Ketone/Glucose Meter. The test strips measure ketone levels in blood with a very small sample, just 0.8 microliters. Results are available in 10 seconds. One box of ketone strips contains one vial of 25 test strips. The test strips provide an unopened 2-year shelf life from the date of manufacture and can be stored in the Nova Vet meter carrying case.