My cat has Diabetis and I take his urine as much as possible. He is 20 years old. In the last month his results were negative/negative . No matter what time I test it's the same. I was told by my Vet to raise or lower his insulin by the results of this test. I cant go any lower. I tested the strip on myself tonight and it was N/N. I tested on my husband who has been diagnosed with Diabetis but in remission and it was N/N. Could there be somrthing wrong with these strips?? I know my cat has to see the Vet this coming week but $ is so tight amd I'm really scared. He is acting alright, but not himself tottaly. Please, could someone tell me if it is possible for strips to read N/N for amyone who urinates on them, and also is'nt negative Glucose bad??? HELP Thank you, Mary Ann