Just an FYI, Deb. You can buy a pet test meter and do your own curve. Our vet in Texas is 45 minutes away, so it is a chore to take our girlie in every week, etc., for testing. So I purchased a meter and did my own curves. When we went back in he looked at it and complimented me on the thoroughness of the testing, etc. I also took my meter to show him. There are two that I see recommended. One is the AlphaTrax2 and the other is the Advocate Pet Test Meter. I have the Advocate because they run specials occasionally where the testing kit is free if you pay shipping.
It's not a substitute for your vet, but when you suspect a problem, like you did, it makes it easy to check. I didn't think I could do it, truthfully, but she gets so upset going to the vets and she tolerates me testing her blood sugar whenever I need. I do it on the inside of her ear. Also, you can do a curve anytime you think there may be a problem, then report to your vet.
Dale