Administering HGH Geno from Cartridge without Pen

I have some Gen carts, but no pen. I Have found a video online on how to mix the carts without a pen.

I am now just trying to find the exact amount I need for the syringe, I have 1.0ml needles

They are 12 mg carts, so 3iu per mg.

I want to take 3 iu or 1mg per day, how does that translate into the syringe? Is it 1.0ml to 1 mg? or 0.1ml to 1mg?

I was just told by my friend 1ml syringe is 10 iu.

I am confused

Depends on the concentration of mg/ml. If it’s unmixed then you determine that value. This is in powder form, yes?