Identify the exact substance
Write the molecule, research code and formulation. Do not assume a similar name means an identical product.
Find the original evidence
Ask for the paper, official trial record or regulator document. Record its date and distinguish it from a seller's summary.
Name the model
Was the claim tested in cells, animals or people? Keep that context attached to the result.
Check the actual outcome
What was measured, against what comparator, and for how long? Avoid replacing a measured endpoint with a broader promise.
Separate registration from results
A trial listing describes a registered study. Ask whether results are available and whether the claimed conclusion actually follows.
Read labels and testing claims carefully
Ask what the laboratory test measured and whether it concerns the exact product. Do not treat an identity or purity claim as clinical evidence.
Check approval claims and uncertainty
Ask whether the exact product is approved for the proposed use. A research-use label or a claim of similarity is not a substitute for the appropriate evidence.
Check incentives and next steps
Record who is selling, funding or promoting the claim. Leave unanswered questions unresolved and discuss personal medical questions with a qualified clinician.
Read the label without extending its meaning
FDA warns about unapproved GLP-1 products sold to consumers with misleading research-use labels. A “research use only” label is not evidence that the product is an approved medicine for a person to use (FDA: Concerns with unapproved GLP-1 drugs used for weight loss).
Keep laboratory questions narrow: what was measured, in which sample, by which method, and against which reference? Do not substitute a test about identity or material properties for a human clinical outcome. For an explanation of measurement questions, read Studying proteins and peptides in the lab; this field guide does not certify laboratories, batches or sellers.
Supporting reading
FDA warns about unapproved GLP-1 products marketed to consumers with research-use labels. Its warning concerns those products; it is not a blanket legal classification of every peptide.
ClinicalTrials.gov: API and study-record definitions.
FDA: Concerns with unapproved GLP-1 drugs used for weight loss.