Going To Take Finasteride. What Blood Tests Do I Need To Take First?

[StudyHacks]

In case things go wrong and I get hit with the sexual side effects, I'll need to do some blood tests first

What hormone levels do I need to know the baseline of?

I'm thinking:

Free test

Estrogen

Estradiol

SHBG

Prolactin

Anything else that finasteride affects?