The AlphaTrak glucometer is good in the sense that it is calibrated for pets and generally matches the numbers the vet will have. The downside to it is the meter itself costs about $50 and the strips are $50 for 50 strips, so when you are testing 2 or more times per day, that adds up quickly. What many vets won't say is that you can use human meters at much less cost. I personally use the Contour Next glucometer and get decently priced strips on Ebay. I know many people here use the Relion meter from Walmart, as you can buy the meter for about $14 and strips are pretty cheap as well. Just get one that requires the smallest size blood drop (0.3 uL).