I also use the One Touch Ultra, and like its speed and the small amount of blood you need. I don't bother using it on my arm. One caveat: if you suspect that your blood glucose is low, DO NOT test in the arm, because it takes longer for the glucose levels in the arm to come down (compared to the fingertips), so you could test okay, but actually be low. If you're getting symptoms of low blood glucose, use a fingertip instead. Also, if your test in the arm reads anything below 80, you should double check with a finger-stick.
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