Lab tests & COAs
Best Peptide Shops — glossary
The short answer
Plain definitions that link peptide-buying vocabulary to real evidence: certificates, batch numbers, lab tests and buyer protection.
Lab tests & COAs
Certificate of analysis — Best Peptide Shops
A laboratory report stating the identity, purity and quantity measured for a specific batch.
Read the guide ↗Lab tests & COAs
Batch number — Best Peptide Shops
A code that links a vial to the production run that was tested.
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HPLC — Best Peptide Shops
High-performance liquid chromatography, the method most often used to measure peptide purity.
Read the guide ↗Lab tests & COAs
Mass spectrometry — Best Peptide Shops
A method that confirms a peptide's identity by measuring its molecular mass.
Read the guide ↗Lab tests & COAs
Purity — Best Peptide Shops
The share of a sample that is the target peptide, usually reported as a percentage by HPLC.
Read the guide ↗Lab tests & COAs
Group test — Best Peptide Shops
An independent laboratory test of one vendor batch, funded by several buyers who share the result.
Read the guide ↗Sourcing & shipping
Lyophilised peptide — Best Peptide Shops
A peptide freeze-dried into a stable powder for storage and shipping.
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Escrow — Best Peptide Shops
Funds held by a third party until an order is delivered or a dispute is resolved.
Read the guide ↗Legality
Research use only — Best Peptide Shops
A label for compounds sold for laboratory research rather than as approved medicines.
Read the guide ↗Legality
503A compounding — Best Peptide Shops
Compounding by a state-licensed pharmacy or physician for a named patient on a prescription.
Read the guide ↗Sources used here
- Peptaura — official site — Company-published catalog, batch numbers, certificates of analysis, testing, escrow and review information.
- U.S. Food and Drug Administration — 503A bulk drug substances categories and Pharmacy Compounding Advisory Committee materials, 2026.
- U.S. Department of Health and Human Services — interim enforcement discretion policy for certain peptide bulk drug substances, 28 October 2026.
Practical checklists are original editorial guidance. Company descriptions do not establish comparative performance. This guide is general education, not medical advice. Research peptides are sold for laboratory research and are not approved for human use.
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How to cite this guide
https://bestpeptideshops.com/glossary/