Can sterile water be used to reconstitute HCG?

[avisudip]

Bacteriostatic water is not available here, nobody knows what bacteriostatic water is. And there are few available online but not reputed source and it can contain anything and I don't want to risk the HCG. So, my question is can I use sterile water to reconstitute HCG, is there a way to keep the solution sterile for couple of weeks?