Fit the cuff around your bare left upper arm, do not place over clothing. The cuff should be placed so the lower edge is about 1 inch above the bend of the elbow. Remember, do not take your measurement as soon as you wake up. You can prepare for the day but don't eat breakfast, take medication, or exercise beforehand.
Ensuring the tube is in line with the center of your palm, close the cuff with the velcro fastening. The cuff should be fitted tight enough the allow 2 fingers to fit beneath. Insert the cuff tubing into the unit. Make sure it is inserted securely and there are no kinks.
You should perform the measurement sitting down - allow yourself 5 minutes of sitting down before beginning the measurement process. Always make sure that you are resting your arm and raising it to the level of your heart, whether at a table or at a desk. The cuff should be on level with your heart.