2010 IFBB 2010 NPC 2011 IFBB ABS Amino acids Anabolic Steroids Arnold Schwarzenegger Biceps bodybuilder Bodybuilders BodyBuilding Branch Warren build muscle Dennis Wolf Dexter Jackson Diet Dorian Yates Evan Centopani Exercise fat burning Figure Hgh Hidetada Yamagishi ifbb Insulin JAY CUTLER Kai Greene MR. Olympia NUTRITION Phil Heath Protein Ronnie Coleman Ronny Rockel Shawn Ray Shoulders STEROIDS steroids profiles Steroids substance Supplements Testosterone Toney Freeman TRAINING Triceps weight loss Workout Routine
Testosterone can be administered parenterally , but it has more irregular prolonged absorption time and greater activity in muscle in enanthate , undecanoate , or cypionate ester form. These derivatives are hydrolyzed to release free testosterone at the site of injection; absorption rate (and thus injection schedule) varies among different esters, but medical injections are normally done anywhere between semi-weekly to once every 12 weeks. A more frequent schedule may be desirable in order to maintain a more constant level of hormone in the system.  Injectable steroids are typically administered into the muscle, not into the vein, to avoid sudden changes in the amount of the drug in the bloodstream. In addition, because estered testosterone is dissolved in oil, intravenous injection has the potential to cause a dangerous embolism (clot) in the bloodstream.