![background image](http://html.mh-extra.com/html/accu-chek/aviva-nano/aviva-nano_reference-manual_455907094.webp)
4. Press the priming button like a pen until
it clicks. The release button turns yellow.
Do not press the release button while
pressing the priming button.
5. Press the finger pricker firmly against a
fleshy site and press the yellow release
button. Immediately lift the finger pricker
off the site. Remove the converter cap by
pulling it straight off.
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