Insulin Injection Site Rotation and Technique

Recommended Practices

The American Diabetes Association recommends dividing each injection area into quadrants or halves and rotating systematically within one area before moving to another area, using one zone quadrant/half per week, to prevent complications and achieve optimal glycemic control 1, 2
The Mayo Clinic recommends injecting at least 1 cm from previous injection sites, rotating in a consistent direction, and using 4-mm pen needles inserted at 90° angle for all adults regardless of age, sex, ethnicity, or BMI 1, 2, 4, 5
Allow insulin to come to room temperature before injecting to reduce pain and prevent lipodystrophy, and clean the injection site with alcohol swab and allow to dry before injection 1, 2
Systematic rotation of injection sites reduces the risk of lipodystrophy, which can lead to unpredictable insulin absorption and increased glucose variability 1, 2

The American Association of Clinical Endocrinologists recommends injecting into the abdomen, within boundaries approximately 1 cm above symphysis pubis, 1 cm below lowest rib, 1 cm away from umbilicus, and laterally at the flanks 4
The American Diabetes Association recommends injecting into the upper third anterior lateral aspect of both thighs, the posterior lateral aspect of both upper buttocks and flanks, and the middle third posterior aspect of the upper arms 4

Healthcare professionals should review rotation practices at least annually and patients should be taught to self-inspect sites and distinguish healthy from unhealthy tissue 1, 2, 5
All patients who inject insulin should have their sites checked at every regular visit, or at least once a year 5