Please read the thyroid basics sticky re rT3 issues and treatment
So SERM increased FSH but not LH?
That is odd.
Just so you know, elevated FSH can be from a testicular cancer. It TRT is started, its a stronger sign as FSH and LS should to to near zero. FSH producing pituitary adinomas are rare.
Note that LH is released in pulses with a short half life. So there is the possibility that average LH is better than detected.
Will be on the road. My coverage here may be thin.