The first thing to check is whether the lab report actually applies to the product you're buying. Look for the product name, model, flavor, and nicotine strength. It should also list a batch number or lot number. If the report doesn't match the batch you're ordering, it's useless.

A report for a "similar" product is not good enough. Manufacturers often tweak formulations, and a report from a different batch could be hiding changes in ingredients. Always ask for the report that corresponds to the batch you're about to purchase.