In the past few years, T patches have also been released for prescription usage. Both scrotally applied and nonscrotally applied vehicles are available. These forms of delivery offer more constant T levels and avoid the inconvenience of im injection. 1999, Carrie J. Bagatell, William J. Bremmer, “Androgen and Estrogen Effects on Plasma Lipids in Men”, in Leonard Share, editor, Hormones and the Heart in Health and Disease (Contemporary Endocrinology; 21), Totowa, NJ: Humana Press, →ISBN, page 237: