Shelf life when mixing HGH?

[Trueblue]

When I pepare my HGH in the needle ready for injection, how long can I leave the HGH in there for before I need to inject? (presuming I put the needle back in the fridge when mixed)
e.g can i prepare the night before to save time for morning injections?

I dont see why not as long as you put it back in the fridge. But it only takes about 30 seconds to draw up your gh in the syringe.