Then don't buy tbh. If the only way to know is to interrogate them, maybe skip it

@Lena, but what does a good answer actually look like if they do have batch info? Like, what am I looking for

Honestly, even just: "batch #X, harvested spring 2024, tested by [lab name] for grayanotoxin," something that connects the specific jar to a specific test, doesn't have to be a full PDF in the cart. just has to exist and be findable if you ask