Test 400 came out a few years ago, and was received very well by the average smuggler. You see, since Test 400 was available in Mexico for a reasonable price, and had 4 grams of testosterone per bottle, you could actually bring back double the amount (mg-wise) of testosterone in the same space. Really, this product is a smuggler's dream, and Test 400 flooded the streets of Venice and other steroid hot-spots soon after it hit the market.
I suppose the good thing about Test 400 is that you can get a whopping dose of testosterone in a few milliliters of product. Other than that, it's very painful to inject and not really anything special over any other form of testosterone.
Denkall produces this particular testosterone blend, Test 400. Test 400 has the highest concentration (and pain) of any of the mass-produced testosterone blends. Test 400 comes in with the following characteristics per ml: