Obviously one needs high-normal T levels.
But also need E2 managed near 22pg/ml.
Metabolic balance is more that T and E2. You need optimal Vit-D25 levels usually requiring 5,000iu Vit-D3 per day. Also need optimal thyroid function. fT3 controls body temperature and ATP production via mitochondria.
See these links found here: https://forums.t-nation.com/t/about-the-t-replacement-category/38/2?u=ksman
* advice for new guys
* things that damage your hormones
* protocol for injections
* thyroid basics - check oral body temperatures to evaluate
* finding a TRT doc
No short cuts, do the reading and know the facts.
At 60, we are not looking for a cause for low T, so testing LH/FSH could be skipped.
Thyroid is very important. You need to have long term use of iodized salt and/or vitamins listing iodine+selenium. Sea salt, pink salts, real salt are all a road to ruin.