How to do a subcutaneous injection
Most peptides go subcutaneously, into the layer of fat just under the skin. With an insulin needle it's quick and close to painless once you've done it a few times.
Where to inject
- Belly: at least 2 inches (5 cm) away from your belly button. The easiest spot for most people.
- Front of the thigh: the outer, middle part.
- Back of the upper arm: harder to reach by yourself.
Avoid scars, bruises, moles and anywhere sore or swollen.
Watch it done
Watch: Your first injectionSubcutaneous self-injection · ConciergeMD
Step by step
Wash your hands
- Then swab the vial top and let it dry.
Draw your dose
- Check the units against your notes or the calculator. Tap out any air bubbles and push them out.
Clean the spot
- Swab the skin and let it dry completely. Injecting through wet alcohol stings.
Pinch and insert
- Pinch a fold of skin. Insert the needle at 45–90 degrees in one quick motion.
Push slowly
- Press the plunger steadily, wait a couple of seconds, then pull straight out.
Dispose of it safely
- Put the syringe straight into a sharps container. Never recap it, reuse it or share it.
Rotate your sites
Using the same spot over and over can cause lumps under the skin (lipohypertrophy) that absorb unevenly. Move each injection at least an inch from the last one, and rotate between sides and areas.
Warning signs
- Infection: redness that spreads, heat, pus, red streaks or fever. See a doctor the same day.
- Allergic reaction: hives, swelling of the face or throat, trouble breathing. Call 911.
- A small red bump that fades within a day is common and usually harmless.
Supplies
We may earn a commission from these links.Common questions
Does it hurt?
Insulin needles are very fine (29–31 gauge), so most people barely feel them. Letting the alcohol dry first helps.
Do I need to pull back to check for blood?
No. That's not recommended for subcutaneous injections.
Can I reuse a syringe?
No. Needles dull and stop being sterile after one use. Use a new one every time.