What Happens If You Inject B12 Into Fat? PA Relief How to Give a B12 Injection: Step By Step Instructions Subcutaneous Injection: What It Is and How to Give One A Guide to the Best Needles for B12 Injections Precision Labs 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 How to Give a B12 Injection: Step By Step Instructions