Injection Site Rotation
Also known as: site rotation · rotating sites
The practice of varying injection location across sessions to prevent tissue irritation, lipohypertrophy, and absorption inconsistency.
Repeated injection at the same site causes local tissue changes: inflammation, scar tissue formation, and lipohypertrophy (lumpy fat tissue that absorbs peptides unpredictably). Established protocols rotate injection site across at least 4–6 positions on a predictable cycle — e.g., left abdomen, right abdomen, left thigh, right thigh, alternating daily.
Rotation also controls site-specific absorption variance. A protocol that always injects in one spot will have lower variance but also progressively worse absorption over time as local tissue changes accumulate. Rotation introduces small session-to-session variance in exchange for long-term tissue health.
Related Terms
Subcutaneous (SubQ) Injection
Injection into the fatty layer immediately beneath the skin and above muscle tissue.
Subcutaneous Absorption Rate
The speed at which a peptide injected into subcutaneous tissue reaches systemic circulation.
Intramuscular (IM) Injection
Injection directly into muscle tissue, typically using a longer needle than subcutaneous injection.
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