HGH Authenticity

i just started hgh, 3ius daily. i’m 5’10", small frame(wrists,hands,ankles).
should i do it daily or 5 days on 2 days off?
does it always have to be in the fridge or just after i’ve mixed it with water?

also, some vials have yellow flip off lids and some have blue lids. does anyone know the difference?
finally, what can i look for to make sure i’m getting authentic hgh and not something else?..i don’t want bitch tits.
if anyone can answer my questions i’d appreciate it.
thanks