That's what I do. Don't agitate, keep it cold, dilute it with 2ml so the little that may be left isn't a1/2iu.
Oh and enjoy, gh is amazing from day one. My cycle is in overdrive after a week. I can't hardly take my shirts off after I work out. I started with 2iu's a day. Tried 4 but got headache and bloated.
It's very cool after a couple hours from your pin. Your veins start erupting from your skin.