Got a ton of DMs from this. What I've learned (US filter): You can get your peptides from two types of sources: 1. Grey market "research facilities" that buy them from overseas labs (mostly in China) and don't test every batch. They don't require prescriptions and they are cheaper. An independent lab @finnrick_tests randomly tests these providers and grades them. 2. 503a registered pharmacies that make or source through regulated domestic supply chains with USP-grade ingredients. They require a prescription and are more expensive. I probably got something wrong here, so please correct me. Want to make a decision on a vendor today.