decrease sexual function and desire,
erectile dysfunction (ED),
decreased muscle mass, and
Full thyroid in the UK is TSH and T4. They won't test T3 unless your either of those are out of range. And the range in the UK is much wider than in the rest of Europe. I fought and fought to get my T3 tested, cos my T4 was low by European standards, but just within UK standards, and my doc refused.
You can google how much it costs to get these tests done privately: from what I remember it was £100 for TSH, T4 and T3.
It takes up to a week, and you'll probably need to call them, and specifically ask them to give you your figures.