1. Choose a suitable closed collection needle, hold the needle sleeves at both ends and unscrew it in the opposite direction, and remove the white sheath at one end (the end with the rubber sleeve).
2. Screw the end of the needle with the sheath removed into the needle holder in a clockwise direction.
3. Remove the colored end needle cover, and place the needle obliquely upwards at an angle of 15 to 30 degrees with the skin: choose a thick and straight main vein for venipuncture.
4. After venipuncture, put the vacuum blood collection tube into the needle holder, the index finger and middle finger clamp the flange of the needle holder, and apply pressure to the bottom of the test tube in the opposite direction of the thumb, and perform the tube plug puncture: using the principle of differential pressure, blood flows in automatically In the blood collection tube
5. Take the blood collection tube that has been collected and shake it at the same time. The method of shaking is to reverse 180 degrees 5-8 times:
6. After the blood collection is completed, first remove the last collected test tube from the needle holder, then pull out the venipuncture needle and place it in the recovery box.
