Blood Glucose Monitor Test Sugar Diabetic Glucometer Meter
2. Unscrew white cap of the blood-sampling pen; 3. Insert the long end of an unused blood-sampling needle fully into the pen socket; 4. Twist off the blue protective cap of the needle. Don''t throw it away (see 15 below) 5. Place the cap of the blood-sampling pen over the needle and screw it on tightly. 6. Choose the blood-sampling pen depth.