20 YO with Low Testosterone, Need some advice

[Hydrophile]

Hey guys. I went in to the endocrinologist because of constant fatigue, very mild gyno (did an ultrasound for the sake of it, there is hardly anything there but it does cause nipple puffiness), and the fact that I'm 20 and cannot grow facial hair. Turns out I have low testosterone. I have never used steroids so that is not the cause.

(I also found out lack of focus is a symptom of low T. I had been put on Adderal for ADHD a while ago but it didn't help all that much, maybe this explains the root cause.)

How do these levels look? (all I know if 298 testosterone is not right for a 20 year old male):

COMMONRM BIND GLOB ------------ 35 nmol/L --------------- 16 - 70 nmol/L
TESTOSTERONE -------------------- 298 ng/dl ---------------- 200 - 745 ng/dl
TESTOSTERONE, FREE ------------- 5.7 ng/dl ---------------- 3.1 - 12.8 ng/dl
TESTOSTERONE, BIOAV ----------- 133.0 ng/dl -------------- 71.7 - 300.0 ng/dl

IGF I ---------------------------------- 318 ng/mL -------------- 83 to 456 ng/mL
Z SCORE, MALE --------------------- 0.6 SD -------------------- NEG 2.0 to +2.0 (Unit: SD)

CORTISOL (11:30 AM) ------------- 15 mcg/dl ---------------- AM (Before 1200): 4-23, PM (After 1200): 2-14

PROLACTIN ------------------------- 15.1 ng/ml ---------------- 3.7 - 17.9 ng/ml

ESTRADIOL ------------------------- 12 pg/ml ------------------ 6 - 65 pg/ml

T4, FREE ---------------------------- 0.9 ng/dl ----------------- 0.8 - 2.2 ng/dl

TSH, SENSITIVE ------------------- 4.152 uIU/ml ------------- 0.300 - 5.000 uIU/ml

FSH --------------------------------- 3.2 mIU/ml --------------- 1.6 - 9.7 mIU/ml

LH ---------------------------------- 3.8 mIU/ml ---------------- 1.2 - 7.8 mIU/ml

I have a few questions:

- Along with TRT, what other medications will I need to be put on? SERM, AI, or anything else?

- What level of testosterone am I supposed to be shooting for? I want to know this so I don't end up on too low of a dose.