Have not seen this before, so no one has an answer.
Post your other lab work and ranges, maybe there is a clue there.
Other adrenal hormones of interest: DHEA-S, AM cortisol [at 8AM]
See the stickies: About the T Replacement Category - #2 by KSman
Free T results?
Progesterone can be HPTA repressive, but no sign of that with TT-1200
Are you natural?