Quote Originally Posted by gdevine View Post
I am suspecting Thyroid.

T3 is low for a man your age.

What is the range for T4?

You need a complete Thyroid work-up done including:

TSH
FT4
FT3
RT3
Thyroid Antibodies

This will give you a better picture. You're T3 (or better Free T3) is best at the mid to upper end of the reference range and you're not.

Hypothyroidism will cause Secondary Hypogonadism.
Will correcting hypothyroid correct test levels usually or are they usually treated congruently?