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Documentation before promises
We believe trust starts with clear information. That is why PurePeptide focuses on laboratory analyses and scientific sources instead of exaggerated claims.
Questions? Here are the answers
What makes PurePeptide peptides different?
Our strength is transparency and quality control. Every product is lyophilized for a longer shelf life and has passed HPLC and LC-MS analysis, which confirms purity above 99%.
Testing is performed by the Czech laboratory Janoshik. Certificates are uploaded to the product pages so you can access them directly.
How can I verify the certificates of analysis?
Each product has a certificate of analysis (CoA) issued by Janoshik Labs. The documents are available directly on the product pages and include a batch number. <br><br>You can verify the authenticity of the analysis here .
How long are unreconstituted peptides stable?
In unreconstituted (lyophilized) form, peptides are the most stable. When stored properly in a refrigerator (2–8°C), protected from light and moisture, they generally retain stability for up to 24 months.
At room temperature, peptides may retain stability for up to about 4 months, but refrigeration is recommended for optimal long-term stability.
How long are peptides stable after reconstitution?
Stability after reconstitution is drastically reduced, regardless of whether preservatives are present, as in ready-made peptide solutions.
Peptide bonds are susceptible to hydrolysis in the presence of water, which reduces quality. Under refrigerated conditions, the stability of a reconstituted peptide is around 4 weeks.
How long does shipping take?
We work with courier partners that ensure fast delivery. Shipments within Bulgaria usually arrive within 1–3 business days.
