Start with the product identifier and batch reference. Compare those fields across the listing and its source documents. If they differ, ask the supplier to reconcile them before relying on the record.
Next, find the method and date associated with each reported result. A number without its method or batch context is hard to interpret. Keep the source document with your own research notes.
Finally, note what the record does not say. Missing fields are questions for the supplier, not details to infer from a product description.