I have an old issue of Muscular Development fromm Feb, 02 that did a lab analysis on it, probably where that 349 figure came from. They listed 32mg of propionate, 151mg of cypionate, and 166mg of enanthate with 11% alcohol content. Still not too shabby at the price I see it for. However, this was over a year ago, and things do tend to go downhill with mex labs imo.