Subcutaneous Injection Technique
Overview
Subcutaneous injection delivers medication into the fatty tissue layer beneath the skin for slow, sustained absorption.
Procedure Steps
- Select injection site (abdomen, thigh, upper arm)
- Clean area with alcohol swab
- Pinch skin fold at 45-degree angle
- Insert needle smoothly
- Inject medication slowly
- Withdraw and apply pressure
Injection Sites
| Site | Absorption Rate | Best For |
|---|---|---|
| Abdomen | Fastest | Insulin |
| Thigh | Moderate | Heparin |
| Upper arm | Slowest | Vaccines |
Rotate injection sites to prevent lipodystrophy and ensure consistent absorption.
Complications
- Bruising and hematoma
- Infection at injection site
- Lipohypertrophy with repeated use