I was given a vial of "pure testosterone" in liquid form by my Endocrinologist. I was told it could be applied topically OR sublingually. It was created by a local compounding pharmacy and the label only states "Testosterone 25mg/ml PG". I'm a little suspicious because I've never heard of anything like this. I hoped some steroid experts here might be able to take a guess at exactly what this could be: Is there any chance that this is the liver toxic methylated testosterone? Is it even possible for this to be "pure testosterone" or testosterone dissolved in water or propylene glycol? Secondly, would be the conversion rate to DHT and E2 for something like this? I've been told that there is a high concentration of 5-AR in saliva.