The test only starts when the strip has enough blood. More blood could be added to the same side of the AlphaTRAK 2 test strip for up to 60 seconds. Use the same AlphaTRAK 2 system your vet uses to get accurate results at home. AlphaTRAK 2 Blood Glucose TEST STRIPS are validated for dogs and cats. NEW Alpha TRAK II - the unit can only be used with strips and lancets which are marked Alpha TRAK II.