Originally Posted by sanjeev_k_sharma
I don't suppose there are any easy tests for purity & excipients?
Unfortunately nothing easy or accessible to the common person.
When taking any compound from those "underground sources" there is always an element of trust or "faith". Either you are comfortable enough with what you get and the info you may eventually have about it to go ahead, or not.
This is also valid for the vast array of steroids and other "gear" widely used by the BB subculture. Many of those compounds are made at unknown labs at China, India, Turkey, Pakistan, etc.... and despite having on the surface the appearance of an industrialized compound, there's no way to know about the purity of source chemicals used, contaminants, effective dosage, etc....