HI Dan and Welcome,
Lots of people here use the ReliOn from Walmart. The meters are generally inexpensive - it's the strips that are costly. The ReliOn strips are the cheapest. If you buy a brand name meter (sometimes they are free on promotion) you can get strips on ebay for a good price. Here is a shopping list for hometesting:
A human glucometer. Any one that sips and takes a tiny sample is fine. The meters are often free at drug stores; it’s the strips that are expensive. You can, however, buy them on ebay at less than half the price of stores. Lots of people here also like the ReliOn from Walmart. It is an inexpensive meter and its strips are the cheapest around. Try the meter out on yourself or someone else before you try it on your cat. You want to be familiar with it before you poke the cat.
Lancets and a lancet device. Usually, until the ears “learn” to bleed, a 25-26 gauge is good. Any brand will work.
Ketone strips. (Ketostix) Just like human diabetics use. You will sometimes need to test urine if the numbers are high.
Rice sack. Make this out of thinnish sock, filled with raw rice or oatmeal and then knotted. You heat this in the microwave until very warm but not hot. Then heat the ears before poking.
Also nice to have. Flashlight: so you can look at the ears and find the little capillaries that come off the vein running down the ear. Vaseline: Put a tiny smear where you want to poke. It will help the blood bead up.
And some lo carb treats to give your kitty, successful test or not
Lo carb treats
Not sure if you have seen the food chart:
Janet and Binky’s chart The consensus here is that the RX food is no better and often worse than the OTC food and more expensive. Lots of us feed Fancy Feast, Friskies, Wellness and Merrick.
PZI is a mild, long lasting insulin. Here is information on how it works:
viewtopic.php?f=24&t=32799 We suggest to start low and go slow with the dosage - starting at 1 unit twice daily, testing before each shot and mid cycle.
Keep reading and asking questions. We will be glad to help you and your cat.