i usually get my hcg locally and 5000 ius comes in 5 mL vial along with a vial of bac. water to constitute with. well i ordered some in this time from a site I frequently use and its 5000 iu's in 1 mL vial with a 1 mL amp of sodium chloride. i can do the math and get the shots right, but whats with the sodium chloride? i have some bac. water still, should i just use that like i normally do? or is there some advantage to the sodium chloride that im not aware of?

since no one has answered here, ill let you guys know what i found out. i talked to someone who is a clinical bacteriology student. he said that the nacl will keep the hcg bacteriostatic longer. but timeframe isnt a main concern with people using hcg for pct needs. in pct we go thru it pretty fast, i used a 5000 iu kit in a week, and i took hcg through out cycle. if you dont use it thru the cycle, youll go thru it even faster.