Kudos at copying someone else's post/research about t3. Please refer to my t3 myth thread.
you should research the drug more before chiming in brother. Read this, then think LOGICALLY about it.
Thyroid hormones, on the other hand, offer significant benefits when used cautiously and "properly". They should not be used haphazardly as a fat loss agent however, instead they are valuable in correcting thyroid dysfunction brought on by androgen use. When done properly, T3 is used as "replacement therapy" and serves only to normalize decreased T3 levels. Research has shown that high dose androgens pushes T3 levels down (14,15). This is significant because the real value of optimal thyroid levels is not for fat loss, but instead for optimum anabolic activity. T3 has diverse facilitative anabolic effects including, increasing GH secretion(16,17), up-regulating GH receptors (18), up-regulating IGF-1 receptors (19,20), and other less well defined anabolic effects (21,22). Don't get the wrong idea however, for T3 to facilitate anabolism, it must stay in the high normal range. A little too high or a little too low significantly changes the biological effects of thyroid hormones. Bringing T3 levels too high will undoubtedly backfire and lead to muscle, strength losses, and rebound fat gain.
You will need regular blood tests to determine the optimal dose of T3 (e.g. Cytomel) to bring you up to the optimum range. If you are unwilling, or do not have access to, regular blood work I would not recommend using T3. The old "take your morning temperature" recommendation is simply too inaccurate. Most people use way too much T3 and cause more problems than anything else. However, if you are willing to take care of yourself while optimizing muscle gains, have your free T3 checked before using any T3, yet during your full dose androgen regimen. Try to bring your free T3 levels up to ~7.0-7.4 pmol/L. Your doctor may use conventional units on your blood work which means it will read in "pg/dL". If that's the case bring your levels up to about 450-480 pg/dL. Doing this will allow optimal caloric intake while minimizing fat gain, as well as optimize the anabolic actions of the androgens you are using.