Last month I increased my dose slightly, the doctor suggested doing it a couple of months back if I felt the need as the last set of blood work for me showed about half the T levels I have today... but my latest blood work shows I've reached above peak average male levels (flagged "high" on the system and above average for male/age) and the hematocrit shows slight thickening of the blood.
To be expected if there's a cumulative effect of your T application by shot or gel over time, plus an increase. There's the fact I freedive now as well which is known to cause an increase in RBC count if you attempt to expand the duration of your apnea. I'll probably need some blood drained at some point... which will screw my diving time no doubt.
I've noticed my voice deepening again with the slight increase over the last month, ALL of my facial hair is super prickly quite suddenly, some more hair on the stomach area, things like that. Chances are the doctor and the GIC doctor will both advise me to reduce the dose now in May, though.