Identity is the first question
Analytical methods can help determine whether a sample contains the expected substance. The method, sampling process, reference standard, and reporting quality affect what can be concluded. A document from an unknown source is not independent authentication of a particular item.
Purity is not a complete safety assessment
A high chromatographic purity percentage is not a guarantee of a correctly labeled dose, sterile formulation, absence of endotoxins, or stability during shipping and storage. Different analytical methods address different kinds of uncertainty. Read what was actually tested and what was left unmeasured.
Traceability matters
A meaningful report needs sample identification, dates, methods, laboratory information, and a clear connection to the batch being discussed. A certificate reused across unrelated batches provides little confidence about a specific sample.
Clinical evidence is a different standard
Even a well-characterized laboratory sample has not necessarily been evaluated as a medicine. Analytical quality cannot replace controlled clinical evidence or regulatory review. Use licensed care and approved products when a prescription medicine is indicated.