Aye, I’ve been on HGH myself for near 20 years now, wouldn’t claim to be a chemist, not at all, but I had a few mates here in Ireland who are, take a look at it. They didn’t see anything dodgy, I have never had an infection from using these products.
Bit of cloudiness looked much like pharma-grade, likely from lyophilisation, freeze damage, or how the water was added. Nothing seemed off to me.
As for bioactivity, we didn’t lab-test it. Pharma usually includes stabilisers and buffering agents to keep pH and structure in check, so it’s not really fair to compare 1:1. But if it’s handled right, i’d expect it to fall within that 2.7 to 3 IU/mg range. Nothing pointed to it being weak or unstable.
Some minor breakdown over time is normal, sure , but even after 10–14 days in the fridge, the loss was small, maybe 5–10%. All this can cause a few floaters, but it’s in my view harmless unless the whole vial turns murky.
As for filtering it after? Wouldn’t go near it. You run that through a 0.22 micron filter and you’ll wreck the bloody peptide. If it looks clean and mixes right, best leave it be.