Slide show: Blood sugar testing
Photo of a person pricking a fingertip
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Attach the lancing device cap onto the lancing device if it isn't already attached. Use the depth dial on the top of the lancing device to select the penetration depth of your lancing tip. Place the tip covering the lancet on the side of your fingertip to avoid making the frequently used part of your finger sore. Press the button to discharge the lancet.

Depending on your glucose monitor, you may be able to test your blood glucose from other sites, such as your forearm or thigh. But check with your doctor or diabetes educator first to find out if alternative site testing is appropriate in your case.

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