i actually have tren on hand... but im worried about libido... so is it a must to run test with it too?
In general people usually suggest to run Test much higher than your Tren dose. However, I have read reports by a few people who have actually tried the reverse with great results. What I mean is a low dose of Test, such as 250mg/week, stacked with something like 700mg/week of Tren with very little sides.
Now, I am NOT suggesting you jump in and run 700mg/week of Tren right off the bat. Obviously you'd want to test the waters with a much lower dose. Some people report very little sides with Tren, while others report miserable sides, so you definitely want to find out how it effects you personally. All I'm saying is that it might not be a horrible idea if you wanted to run a low dose of Test as a "base" for a moderate dose of Tren to see how it treats you personally. Again, the "rule of thumb" repeated over and over on many forums says to run higher dose of Test to Tren, but what is constantly repeated and what is true in each individual situation aren't always the same.
At minimum I'd suggest that you run something that will at least create some aromatase activity as I have seen it convincingly argued that rather than the lack of Testosterone, it is the lack of estrogen that causes the dead sex drive with Tren cycles. As I always say, I'm no expert and obviously you should research it yourself, but I'm just throwing it out there to give you something to chew on. Though, one thing I doubt many people would argue is that when it comes to finding a way to create aromatase activity in a cycle, Test should always be the obvious first-choice due to the numerous benefits it can bring to just about any cycle.