How do I know if a lab testing report is legitimate?

Look for the lab's name, ISO accreditation number, and contact details. You can often verify accreditation on the lab's website or through international databases. If the report is just a PDF without lab info, treat it as red flag.

Can I trust a lab report that's older than a year?

Not really. Vape formulations and manufacturing batches change. A report that's more than 12 months old may not reflect the actual product you're buying. Always ask for a recent report that matches the batch.

What if the supplier won't share the lab report?

That's a major warning sign. Reliable suppliers will happily share reports. If they refuse, consider it a deal-breaker and look elsewhere.