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A meter calibrated for a pet typically reads a bit higher than a human meter. The difference is more important in lower numbers. What would be the point for a dose reduction if you decide to follow Tight Regulation as your dosing method is 50 on a human meter. On a meter calibrated for a cat, the dose reduction point is 68. The higher numbers get, the less the difference. (It's not linear.) There are, however, big advantages to using a human meter. Strips are much less expensive and far more readily available. If you run out of strips for an animal meter, the only way you can get them is online. Pharmacies don't carry them. I don't know of any human meters that can be recalibrated for pets.
If you've not done so already, I'd encourage you to read the sticky notes at the top of the Board.There's an overwhelming amount of information in those notes and the links in the notes. Much of what's there will become second nature. In the meantime, though, please ask questions. The people here are very generous with their time and their knowledge. We're here to help.