Still waiting to hear from a couple of people looking into whether that batch might be legit, just made at a Canadian plant that possibly cannot laser-etch QR codes, or some other factory that does not usually make BAC. Funny, I only just finished my last vial of old hospital-grade BAC from 2024, and my 2023 stock, dated to expire in 2025, is next. Back when BAC was hard to find, I bought a big pile at around $80 a pack, figuring I would need it forever. Later I realized water and alcohol do not really go off, so now I use vials until empty, and that pile became a lifetime supply. Maybe I am unusual, but I say newcomers should always hold 3 to 6 months of proper BAC, so a supply disruption does not force overpaying.