10 Questions to Ask Before Your First Peptide Order

Supplier due diligence does not have to be elaborate. Ten questions, sent in one email, will separate suppliers with an analytical process from suppliers with a marketing page. Here they are, with what a good answer looks like.

1. Where is the analysis for this product published?

Good answer: a URL. Weak answer: an offer to send a certificate after purchase.

2. Which laboratory performed it?

Good answer: a named independent laboratory. Weak answer: “third-party tested” with no third party named.

3. What wavelength and gradient was the HPLC run at?

Good answer: specific numbers. Weak answer: an assurance that the method is standard.

4. What is the net peptide content, and the counter-ion form?

Good answer: two figures, distinct from the purity number. Weak answer: the purity number repeated.

5. How is a vial traced back to its analysis?

Good answer: a specific mechanism, even a limited one. Weak answer: an implication of lot-level traceability that no one can demonstrate.

6. Who are you permitted to sell to?

Good answer: research institutions, licensed researchers, universities and laboratory R&D purchasers, stated without prompting. Weak answer: anyone.

7. What will you not advise on?

Good answer: preparation, handling and dosing — declined clearly. Weak answer: helpful suggestions. The helpful supplier is the higher-risk one here, for both of you.

8. What is the remedy if my own testing disagrees with yours?

Good answer: a defined commitment tied to the published figure, with stated eligibility requirements. Weak answer: a general satisfaction guarantee.

9. Where does the order ship from, and what tracking do I get?

Good answer: a country of dispatch and tracking on every order. Domestic dispatch also avoids customs holds on time-sensitive work.

10. Can you invoice my institution?

Good answer: yes, with purchase orders arranged in advance. Institutional purchasing is routine for a supplier used to laboratory customers and awkward for one that is not.

Reading the pattern rather than the answers

A supplier who answers all ten in a paragraph each has been asked before. One who answers the commercial questions crisply and the analytical ones vaguely is a distributor rather than an analytical operation — not disqualifying, but worth knowing.

The answer to question seven is the one to weigh most heavily. A supplier who volunteers usage guidance is generating exactly the evidence of intended use that turns a research chemical into an unapproved drug in the regulator’s reading. Their exposure eventually becomes your supply-chain problem.


Research use only. All products supplied by Battle Born Peptides are laboratory reference materials for in-vitro research and analytical use by qualified professionals. They are not drugs, foods, dietary supplements, cosmetics or medical devices; they are not approved by the FDA or any other regulator for use in humans or animals; and they are not intended to diagnose, treat, cure, mitigate or prevent any disease, or to affect the structure or any function of the body of humans or animals. Nothing in this article is preparation, handling or dosing guidance. See our full research-use terms.