When measuring blood sugar, why does my needle always not bleed

The correct blood collection method is to select the thin skin on both sides of the finger tip to collect blood, because the blood vessels on both sides of the finger are rich, and the distribution of nerve endings is less. Taking blood from this area is not only painless, but also abundant. The blood collection pen should be close to the skin, and the bottom of the sleeve inserted in the blood collection needle can be padded with something. After acupuncture, gently push the two sides of the finger to let the blood slowly overflow

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