First UGL samples of LR3 I had encountered have been from TheProvider quite a few years ago - might have been 6 or 7 at this point. They were generally good and high quality.
A couple years after that other vendors such as Supertropin started selling (and testing too) and after that the interest seemed to vane.
I remember coming across a couple of lower quality samples, eg. ~20% degraded LR3 and I've tested quite a few supposedly LR3 samples, that were just filler or a different peptide. Most recent one was less than a month ago. Generally, though, the interest seems to have vaned compared to say 4-5 years ago, at least testing-wise.
Stored lyophilized IGF-LR3 samples definitely last years and dissolved in water stored refrigerated for months as per my own testing.
