Fab,
You have an understanding doctor which is a very good thing. My doc is a nice person, in her way, but she's not very knowledgeable. If I tested borderline or low she would almost for sure insist on trans dermal test, and at low doses. Unlikely that she would script injectable. My brother on the other hand has a doc that scripts him injectable test and real T-3 hormones. My brother for health reasons absolutely needs these, although he is 18 years younger than me, he's got an autoimmune disease, and these are necessary to prevent fast decline.
I intend in the near future to try Dermacrime or NTBM's RS-Transaderm at about 60% of full dose for 10 week runs to give me something close to transdermal test. I'll do some 4-5 week recovery after every 10 weeks to keep natural levels from sinking lower. The RS-Transaderm will run me less then $20 per month at these levels, and I won't need other additions except for an anti-E, as I believe the anti-E's that come with this product will not be quite strong enough for me.
I use my doc for blood tests and acute care when needed. She's clueless as to why my blood pressure is 110/72 and my blood tests come back in the healthy range for someone 15 years younger than me. She just shakes her head and says, "You're lucky!" She said that to me 5-6 times on the last couple of visits. I can tell she would like to ask, "What are you doing to get these result?" She can't, and assumes like most conventional docs that the patient is ignorant, and is incapable of doing anything for themselves without help.