I doubt the powders made are Schering or Organon European grade. So from the raw materials the goods are doomed...add to it the preparation and cooking and filtering in the kitchen and Toi end up with sub par gear. As we get older injecting obscure shit into our bodies just insnt worth it.
china raws from government factories are actually usually 98-98% purity which is pretty damn close to perfect.
you just need to make sure the remaining 2% of 'fillers' aren't heavy metals, arsenic, TCA etc unfortunately.
It's the UG 'labs' who are ripping people off.
There is literally no difference in my free/total test #'s from my homebrew vs my prescription HG test. White blood cell and neutrophil (sp?) are up a tiny touch because of irritation / contaminants vs HG but it's negligible. I sterilize the FUCK out of anything I make (again, unlike some meth lab quality UG 'chemist' scratching his arse and then bottling up his dirty, underdosed test with filthy hands)