What is the Shelf Life of HCG + NaCl Mix?

5000iu of HCG came with 1ml of NaCl.
I mixed it before I realized NaCl is not bacteriostatic. Is the shelf life of this just a few days? Can I add BAC to it to increase shelf life?

So you mixed it with salt water? Was it sterile?

It came with it, in the same pharma box.

Then it’s totaly fine and I imagine shelf life, if properly stored, will be comparable to bac water.