Testosterone.net's explanation
This was taken from a Q&A with Brock Strasser....
Everybody Hurts… At Least With T-400 They Do!
Q: I read your last Strasseroids and wanted to comment on the Denkall T-400 that you slammed. I’ve used this stuff and it kicks ass. Yeah, it hurts pretty bad for a few days after you inject it, but I make sure I inject into my ventral quads a day after I do legs. This way I have a week to recover. Goes to show what you know; the stuff is surely legit and not underdosed. What a "guru" you turned out to be!
A: This type of letter is typical of the meathead who’s used steroids once or twice and is now an "expert" on all steroids despite having a sixth-grade reading level and a double digit IQ.
If you go back and reread my column this guy talks about, I did admit that you can get 400 mg/ml of Testosterone esters in a ml of "oil" if you crank up the benzyl alcohol level to around 25%. Of course, it’ll hurt quite a bit and might cause localized cellulitis and possibly necrosis and erosion of tissue. And based on the "it hurts for a few days" schtick, it sounds like this is exactly what’s happening to the letter writer.
I don’t know what the fascination is with ultra-concentrated gear. Yes, there’s a known advantage in using higher concentrated gear (see my article here for details), but at what price? I’d rather use 2mls of real Upjohn Depotest (at 200 mg/ml) and have no pain than use this 400 mg/ml stuff and have a charley horse for four days!
Also, how do you know it has 400 mg/ml without a lab test? You probably won’t know if there’s 350 mg or 325 mg or even 300 mg/ml based solely on clinical evidence alone. And if you’re stacking stuff, there’s no way the clinical manifestations can tell you squat. The bottom line is, stick to Sustanon 250, Primoteston, Durateston, Testex-Elmu or Leo, Testoprim D or even Sten, and you’ll have no real injection site issues.