The powder that pharm grade vs UGL is made from comes from the same place. Same shit. The only thing with UGLs is you risk some impurities like heavy metals in the gear that comes from the impurities with the powders. It's not like you are doing 6 grams of test a week or anything. More than likely you will be just fine going with a UGL. It's really no big deal @ all. If the impurities were such a lethal threat than guys who stay on light cycles year round, like 1.5 - 2g EW, would be getting sick from all these heavy metals - and that is just not happening. More bullshit propaganda that people are spreading that has no merit.
If you are testing low just get a couple vials of test from a good UGL. Shoot 100-200 mg of test EW and you will be back up @ the high end and probably a little above that and you will be feeling good. What's the harm in it if your reading is say 1500-1600 g/dl (nanograms per decilitre)? You are not going to get sick . Anti-aging clinics area fucking rip off. Just do it yourself and be smart about it.