Although i’d wager most of it ends up in humans, it is still sold as a Vetrinary Steroid. As a vetrinary steroid it was never approved for human use, which makes it impossible to get a prescription for it in the usa. add this to the fact that it is a schedule 2 controlled substance in the united states and it becomes quite clear that the only way to get this steroid in the usa is to buy it on the black market. that being said, it is still relatively easy to obtain the real stuff. This is because smuggling almost 2x as much testosterone in the same space is a rather enticing thing, making it commonly available.
The partition coefficient of the ester in question is important because is effects how long the drug itself stays in the system. If the testosterone transfers too quickly from the oil to the blood, the result is a sudden spike in testosterone which then rapidly drops once the dose has been used up. In the example of free testosterone injected into the muscle from a water suspension (as in Aquiviron, mentioned above), the testosterone is essentially immediately available to the bloodstream due to its low partition coefficient, and thus there is an immediate spike of testosterone which is used up quickly in the body.
Primary hypogonadism (congenital or acquired): Testicular failure due to diseases and conditions in the body such as cryptorchidism, bilateral torsion, orchitis, vanishing testis syndrome, orchiectomy, Klinefelter Syndrome, chemotherapy, or toxic damage from alcohol or heavy metals; these men usually have low serum testosterone levels and gonadotropins (FSH, LH) above normal range Hypogonadotropic hypogonadism (congenital or acquired): Gonadotropin or luteinizing hormone-releasing hormone (LHRH) deficiency or pituitary-hypothalamic injury from tumors, trauma, or radiation; these men have low testosterone serum concentrations but have gonadotropins in the normal or low range.