It is often not as simple as that.
There can be more going on than TT, FT and SHBG
SHBG in your case may be from elevated E2 [estradiol].
Are you also finding that you feel the cold easier now?
Have you been using iodized salt to support thyroid hormone production?
See last paragraph in this post.
Please read the stickies found here: https://forums.t-nation.com/t/about-the-t-replacement-category/38/2?u=ksman
- advice for new guys - need more info about you
- things that damage your hormones
- protocol for injections
- finding a TRT doc
Evaluate your overall thyroid function by checking oral body temperatures as per the thyroid basics sticky. Thyroid hormone fT3 is what gets the job done and it regulates mitochondrial activity, the source of ATP which is the universal currency of cellular energy. This is part of the body's temperature control loop. This can get messed up if you are iodine deficient. In many countries, you need to be using iodized salt. Other countries add iodine to dairy or bread.