I’ve used both the Roidtest kits and the Labmax tests! They are both good! If you use the roidtest kits make sure you follow directions exactly! The kit Roidtest sells with multiple tests is a good value and I’ve seen it used many times with many compounds! I’ve also seen several reports of false negatives due to user errors, and a few false negatives due to chemical reactions caused by different fillers used for orals! I prefer to use the Labmax tests as I’ve found they are easier to use and also a little cheaper! I just recently saw a test performed on a highly reputable sponsors brand of primo, which turned out not to be primo, it was test, which was being given to a female. The sponsor was unaware and really stepped up to make everything right and correct everything! These test kits are valuable to our community as they play a huge role in harm reduction and help us work with our sponsors to keep our community as safe as possible!