Mind if I ask what you were using, how long for and how much?
From what I have read DTH should be a great natty test booster through HPTA regulation and cortisol suppression, but I am not sure if it should be used as a standalone for PCT.
PP have some good sustain alpha info and logs on their website if you didnt check that out yet. Like i say, havent had blood work with either of these products and I wasnt using the SA after a cycle, but just a t-booster. It applies easy though and there's no mess or strange smell from the product.
I've been on the starting dose of DTH for 4 days now (4 tabs/day) so tomorrow I will start bumping it up and update you on any changes.