Ghoul
Member
I appreciate your thoughts on this. If people are still having success with HGH and filtering (ie it’s not destabilizing the product), I will 100% start filtering it.
It's not destabilizing it. In order for that to happen, the rHGH monomer would have to be denatured.
Basically, a peptide is a chain of amino acids, AND a specific folded shape. If that shape is unfolded, aka denatured, the peptide loses effectiveness and it will cause aggregation by exposing "sticky" parts of the chain that other molecules can stick to. This unfolding was the hypothetical damage that was theorized to potentially occur with syringe filtering because when pharma filters peptides with industrial machinery, if the pressure is too high, it will cause this to happen.
rHGH was analyzed before and after syringe filtration, and there was no denaturing that occurred. The test was so tightly controlled they used a machine to simulate the maximum pressure a human would apply to a syringe.
One thing to keep in mind though, is that the main cause of aggregation is the formulation. If there aren't ingredients to control PH for instance (called buffers, which all pharma and some UGL rHGH has, and other UGLs don't use), aggregates can reform after a certain amount of time.
Because of that, it's best to filter just before use, and try to use smaller dosed vials when practical that won't be sitting around for long since time after reconstitution is a factor.
These guideline really apply to all peptides.
