I was getting gear from another source, but after some ambiguous testing results I tried some others. Napsgear is clearly the best! I've purchased several brands of Primo, but Bayer from Napsgear is the real deal. Beyond passing the visual tests, such as thickness of fluid and labeling, I also used a test kit on several brands (from other sources) and Bayer from Naps was the only perfect color match. I'm not taking any chances on possibly underdosed gear - Napsgear has the real Bayer as well as other products like Proviron, and I'll be ordering plenty more.