I have some liquid pen Jintropin (Gensci) that has been kept in my fridge all the time I've had it. However, I have 8 x 30IU vials left but the expiry date is 08/2008.
"liquid formulation growth hormone, same as Lilly's Humatrope Pen and Genentech's Nutropin AQ™, which is kept at liquid formulation during all the manufacturing process. Therefore the hGH in AQ are all in its natural active form, never being damaged by freeze-drying lyophilization process, which is known to damage hGH potency (please note that in all hGH instructions, they tell you never freeze your hGH, that's why)."