Is anyone else concerned about how many chemicals could leach out of the Polypropylene syringe barrel or the elastomer stopper? The reason I ask is that my Doc prefilled my hcg syringes again and I have a real problem with having a benzyl alcohol solvent in contact with those two plastics for 60 days and then injecting it into me.
My job is a design engineer who works with plastics every single day and I am constantly amazed at the variations in resins even from the same manufacturer. We can go a whole year without any problems in testing and then out of the blue we fail testing because of pthalates or other plasticizers being way out of range.
Granted, I do not make make medical devices and I’m sure that every batch of resin is tested prior to molding, but I still have issues. All plastics will leach something given enough time and that is greatly accelerated in the presence of a solvent.
I found a couple of small studies on the subject, but none of them specifically included the bacteriostatic compounds used in our trt meds.
Another reason I hate the prefilled thing, is that I am currently in love with the .3cc 31g syringes. They take a while to fill and I get a lot more alcohol boiling with the cypionate, but I can barely feel them going in.
[quote]catfish74 wrote:
I know there are mixed opinions on the subject - but I thought once mixed hCG was only good for 30 days.
You do bring up an interesting point though.[/quote]
If kept in a fridge hCG is good for 90-days. Why don’t you just learn how to fill your own syringes? Easy enough…[/quote]
I guess I should have made myself more clear… The doc prefilled against my wishes. Only the second time in a year. I’m pretty comfortable with all that crazy math involved in mixing my own
There are other studies available that deal with the leaching problem actually rendering some medicines ineffective. None that deal with hcg that I have found, but I would venture a guess that says the hcg will last longer in the glass vial than in PP syringes.
