Which is better for TRT: Troches or injections

In this episode of Ask the Doc, Dr. Rand McClain answers one viewers question about Testosterone Replacement Therapy; he wants to know whether TRT is more effective as a troche or an injection. A troche is a small lozenges that dissolve between the cheek and gum over a period of about 30 minutes.  As it dissolves, the hormones are gradually absorbed into the blood stream, resulting in physiologically natural hormone blood levels. The second question is about donating blood while using other compounds like non-testosterone steroids.