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.
Masterson’s Veterinary Clinic was founded by Dr. Ralph Masterson in 1950. His daughter, Dr. Rhonda Masterson, joined the practice after graduating from The Ohio State University School of Veterinary Medicine in 1987. Upon Dr. Ralph Masterson’s passing in 1989, Rhonda became a solo practitioner, providing care for small animals and farm animals in Perry County and the surrounding area including Lancaster, Newark, Logan, and other communities. Today, Masterson’s Veterinary Clinic has three full-time associates and one part-time associate in addition to Dr. Rhonda Masterson. Two of our associate veterinarians also offer farm animal services by appointment.