Quality & Testing Standards
Every product is independently tested and verified before it reaches your lab.
Our Testing Process
Every batch is tested by an independent analytical lab before it is sold.
Identity and Amount
The lab confirms which compound is in the vial and measures how many milligrams it contains, usually as three replicate readings.
Purity
Most tests also report purity: the percentage of the sample that is the target compound rather than impurities.
Purity
Each product page shows the purity measured for the lots in stock, where the lab reported it.
Certificate of Analysis (COA)
Every batch we sell has an associated Certificate of Analysis — a document issued after laboratory testing that reports:
- Identity of the compound
- Measured amount (mg)
- Purity percentage, when tested
- Batch/lot number
- Date of analysis
- A verification key you can check on the lab's website
COAs on product pages
Each product page shows the test month, lab, and purity for the lots in stock. For a lot without a result shown, email support@terrapeptides.com.
Sourcing & Supply Chain
We work with established peptide manufacturers that meet strict quality criteria including cGMP-aligned synthesis processes, in-house analytical testing, and consistent batch-to-batch reproducibility. Every supplier is evaluated on purity standards, testing documentation, and reliability before we carry their products.
Storage & Handling
Quality doesn't end at the vial. Proper storage is essential for maintaining peptide stability and purity. Each product page includes compound-specific storage recommendations. For general guidance, peptides should be stored in a cool, dry environment away from direct light. See individual product pages for detailed storage instructions.
Research Use Only
All products sold by Terra Peptides are intended strictly for laboratory and research purposes. They are not intended for human or veterinary use, food additives, drugs, cosmetics, or any other inappropriate applications. By purchasing, you confirm that you understand and agree to these terms.