Intra amniotic injection of L carnitine reveals age related effects on tissue total antioxidant status and increases plasma testosterone levels in male broiler chicks BMC Veterinary Research Springer Nature Link Carnitine Deficiency: What Is It, Causes, Symptoms, and More Osmosis Androgen receptor density plays a meaningful role in muscle anabolism because it determines how strongly a muscle fiber responds to androgen signaling. Gabriel Alizaidy, MD, MS Carnitine Blend Rootcology