When a listing opens with lab tests, what still makes people skeptical?

[admin]

I've noticed that some product threads lead with lab tests or bloodwork screenshots, but people still push back in the replies.

What usually keeps a thread from feeling convincing even when it opens with that kind of material?

Is it the lack of batch context, no follow-up discussion, vague photos, or just the overall tone sounding too polished?

Curious what details actually help a vendor/product thread feel worth reading instead of just looking dressed up.