Or if you're really struggling with a super scratchy, snarling, biting kitty, you could try what I was doing to begin with, the patented "poke and run" approach!
Instead of positioning the cat somewhere to do the test, take advantage of a sleepy, relaxed moment. Don't move her, just wake her up slightly by making a fuss of her ears a bit (also this really helps to warm them up and increase blood flow - a small pill bottle filled with hot water helps as well), and then prick the ear, take the test. Praise and bestow low-carb treats upon kitty immediately afterwards to distract her from the minor annoyance.
My cat, Cleo, hates the restriction of movement involved in actually placing her somewhere to do the test and keeping her there, much more than she dislikes the actual BG testing itself it seems; this seems similar to your situation. Cleo has slowly gotten used to this, and she's now hardly even reacting to the tests at all, as long as she is relaxed enough when I do it.
This morning, however, I was unable to test her at all, as she was going through one of her manic half hours at the only point I was at home available to test her - it just wasn't happening, she wouldn't keep still, and when I tried to get her to do so I got scratched!
But this evening's test was completed whilst she was sat snoozing and purring on my lap watching TV with me, and afterwards I had to actually move her off so that I could get her a little treat, she didn't even try to leave of her own accord. If I hadn't moved, Cleo would have just shut her eyes and gone back to sleep.
I'm hoping it'll all continue to improve, so that eventually she'll be happy enough to let me test her whenever, but right now, at the beginning of regular testing, it certainly seems to help massively to do it when she's really relaxed, sleepy and chilled.
Every cat is different, but this may work for you also.
H