It's also filtered before lyophilization and lyophilization is a sterile process
But seriously, there are people here (myself included) who have gone through 1000s of vials with no problems, so take it with a grain of salt
Filter if you'd like, but injected peptides that haven't been filtered twice (as you're proposing) is not a big harm that needs to be reduced imo
I’m with you on this. I’ve been running recombinant HGH daily for over twenty years, sometimes up around 18 IU, and I’ve taught enough chemistry to know when a trend is bollocks dressed up as “safety.”
The only lads I’ve seen having issues in recent years with high quality stuff were the ones getting clever with filters. Not the ones using clean, tested material. That’s thats my experience is not proof of anything obviously, so take it as my experience, not gospel.
From a protein chemistry point of view, filtering high-quality recombinant HGH after reconstitution is the exact opposite of what you want to do. You’re dealing with a fragile polypeptide. Once it’s mixed, it’s sensitive to shear stress, surface adsorption, and mechanical handling. You don’t improve that by forcing it through a membrane.
The irony is most of what people think they’re “filtering out” are stabilisers deliberately added to keep the hormone intact. Remove those and you increase the risk of denaturation, not contamination.
Proper Chinese production today is already sterile-filtered at the lab. Good labs run tight controls, and it goes rather straight from bench to the user.
So in this context, my view is filtering solves no real problem and introduces a few very real ones. Sometimes the smartest thing in chemistry and in lifting is knowing when to leave things well enough alone.