04 · FEMETRIC REFERENCE
Injection Sites
Route-aware site rotation and injection-safety context from public-health guidance.LAST REVIEWED 2026-09-13Route comes first
Subcutaneous, intramuscular and intravenous routes are not interchangeable. This page does not teach self-injection for investigational compounds; use product labeling and trained clinical instruction.
Rotation
For prescribed subcutaneous medicines, public-health guidance commonly emphasizes rotating sites and avoiding irritated, scarred, bruised or damaged skin. Product-specific instructions control.
Stop conditions
Do not inject through infection, broken skin or unexplained swelling. Seek clinical advice for persistent redness, warmth, pain, drainage, allergic symptoms or systemic illness.
Primary and authoritative context
CDCInsulin site rotationReviewed 2026-09-13CDCInjection safetyReviewed 2026-09-13NEXT RESEARCH ACTION