A simple schema of the IGF 1R pathway. IGF 1R is activated through Download Scientific Diagram IGF1 LR3 Palm Beach Gardens FL Physician's Rejuvenation Centers I.M vs SubQ for Growth Hormone, the old adage of what's best? At therapeutic doses, I.M may produce a slightly higher and earlier CMax for GH level. But the overall exposure (AUC) I am injecting IGF 1 LR3 to myself. I have experienced some side effects that I want to reduce to zero. If you have injected IGF 1 or have any other experience with intramuscular IGF 1 LR3 does not promote growth in late gestation growth restricted fetal sheep American Journal of Physiology Endocrinology and Metabolism American Physiological Society