Yes, testosterone is a steroid but not all steroids are testosterone. There are several other naturally occurring steroids that are present in the body. These include cortisol and estrogen. The term steroid refers to a common chemical structure. It is important to note the Men’s T Clinic is not an anabolic steroid clinic. Men who use anabolic steroids (those seen in body building competitions) will have extremely high levels of testosterone and will not qualify for therapy.