Just before I started the cycle I am on now, I was just using Androgel for TRT (my natural test levels are low for a 33 year old guy). I got a phone call from my doctor after I had blood work done because she was concerned over my testosterone level being 2129. That is just from a little more than 5 grams a day. Of course, I put it on right after I get out of the shower, during which I scrub my arms and shoulders and traps pretty hard
I'd extract it in a non-polar solvent (hexane,ether, dichloromethane, etc), wash it in sep funnel with water x3, dry it, and see if I could re-crystallize it into something useful....