I've used slin in the past, very successfully, too. I know and realize all the risks associated with it. I have been off of it for about 8 months but now I wish to go on it again. I have a vial of Humalog in my refrigerator, and it has been there for about a year and a half. I know when refrigerated it can last a long while, however a year and a half is a REAL long time. Do you think it's still good or should i just try ordering online again?