Before buying, ask five things: Is there a batch-specific COA? Is testing third-party? What is the purity? Is it labeled research use only? How should it be stored? Clear, confident answers are the sign of a trustworthy supplier.
The five questions
- Is there a batch-specific certificate of analysis? This is non-negotiable.
- Is the testing third-party? Independent results carry more weight.
- What is the purity? Look for a documented figure, commonly 99%+.
- Is it labeled research use only? Honest labeling matters.
- How should it be stored? A good supplier gives clear guidance.
The answers that should worry you
Vague replies, no available COA, health or usage claims, or reluctance to confirm research-use-only labeling are all red flags. A supplier that answers these questions plainly is the one worth buying from.
Key takeaways
- Ask for a batch-specific certificate of analysis first.
- Confirm testing is third-party, not just in-house.
- Ask the documented purity and whether it is labeled research use only.
- Ask about storage; vague answers or health claims are red flags.
A note on research use
The peptides supplied by Axis Peptide Labs are reference compounds for laboratory and research use only. They are intended for qualified researchers working in academic, institutional, and analytical settings. They are not drugs, foods, cosmetics, or medical products, and they are not intended for human or veterinary consumption. Documented identity and documented purity are what matter most when sourcing a compound, both of which are published on the Axis certificates of analysis page.
