GHK Cu Peptide: What It Does for Body Composition and Metabolic Health Subcutaneous Injection Sites and Instructions for Safe Self Administration Subcutaneous (SC) and Intramuscular (IM) Injections Must Knows for Subcutaneous administration: Pinch skin with non dominant hand and hold syringe with dominant hand Always inject: 2 inches away from umbilicus (for abdomen) 3 inches Subcutaneous injection: Definition and what to expect