Testosterone Propionate is a single ester testosterone. Although synthetic it is a perfect replica of the primary naturally produced male androgen testosterone. By design, the hormone is attached to the Propionate ester, a small/short ester that enables the hormone’s release time to be controlled. The half-life of Testosterone Propionate is approximately two days, which is substantially longer than ester free testosterone, which carries a half-life of 4-24 hours.
