Testing & COAs
Best Peptides — glossary
Answer in brief
Definitions connect the language of peptide buying to concrete evidence: certificates, batch numbers, tests and buyer protection.
Testing & COAs
Certificate of analysis — Best Peptides
A laboratory report stating the identity, purity and quantity measured for a specific batch.
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Batch number — Best Peptides
A code that links a vial to the production run that was tested.
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HPLC — Best Peptides
High-performance liquid chromatography, the method most often used to measure peptide purity.
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Mass spectrometry — Best Peptides
A method that confirms a peptide's identity by measuring its molecular mass.
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Purity — Best Peptides
The share of a sample that is the target peptide, usually reported as a percentage by HPLC.
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Group test — Best Peptides
An independent laboratory test of one vendor batch, funded by several buyers who share the result.
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Lyophilised peptide — Best Peptides
A peptide freeze-dried into a stable powder for storage and shipping.
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Escrow — Best Peptides
Funds held by a third party until an order is delivered or a dispute is resolved.
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Research use only — Best Peptides
A label for compounds sold for laboratory research rather than as approved medicines.
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503A compounding — Best Peptides
Compounding by a state-licensed pharmacy or physician for a named patient on a prescription.
Explore entry ↗Sources for this entry
- 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 reference is general education, not medical advice. Research peptides are sold for laboratory research and are not approved for human use.
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https://bestpeptidemarketplace.com/glossary/