Insulin injection sites: abdomen (fastest; avoid 5 cm around navel), thighs (slower), upper arms (moderate), buttocks (slowest); rotate sites to prevent lipodystrophy. Disclaimer For educational purposes only. Not medical advice. Administer insulin Sites of Administration of Subcutaneous injection Subcutaneous Injection Innermost Healthcare Needle Injection Techniques Every Nurse Should Know! Whether you're prepping for your NCLEX or brushing up on your skills, here's a quick breakdown of the most common injection routes you'll encounter