Identity
Look for the sample identity and the method used to assess it in the original laboratory report.
Mass spectrometry · Identity confirmation
Start with the batch record.
Review original analytical reports for the specific compound and lot.
Purity
Review the reported purity, analytical method, and sample details together. A purity result alone does not establish sterility or suitability for human use.
Independent HPLC · Purity analysisIndependent labs
Check the original report for the laboratory name, test date, and a matching sample or lot reference.
External verification · Objective resultsHandling
Request supplier storage and handling requirements for the specific product and lot before ordering.
Laboratory use only · Storage guidanceFind a batch record.
Enter the batch code printed on your vial to locate its available analytical documentation.
How to review a peptide batch report.
A certificate of analysis (COA) is a report of results for an identified sample. Before relying on it, match the sample to the compound and lot you are considering, then review what was actually tested.
Match the record to the material
- Compound and composition. Check the name and, for blends, the stated components. Ask for clarification when an abbreviation or combined amount is ambiguous.
- Lot and sample reference. Compare the report identifier with the lot associated with the offered material. A report for a different sample does not document your lot.
- Laboratory and report date. Look for the issuing laboratory, report identifier and test date. Request the original document when only a screenshot or cropped result is available. Verify the report identifier through the issuing laboratory’s own website or independently sourced contact details. An authentic report still needs to match the lot supplied.
- Methods and results. Read the method, units and any stated acceptance criteria together. Note which results are measured, calculated or not reported.
Keep different measurements separate
Identity, purity and peptide content answer different analytical questions. A single percentage should not be used as a substitute for all three.
- Identity
- Evidence that the analyzed material is consistent with the intended compound.
- Purity
- A result interpreted in the context of the analytical method and the impurities it can detect.
- Peptide content
- The amount of peptide in the material, assessed using an appropriate measurement method.
USP discusses separate analytical approaches for peptide identity, purity and content. Read the USP analytical reference.
When information is missing
Ask for the missing lot reference, method, composition or result before making a procurement decision. This guide explains how to review documentation; it is not a test report for Peptyed inventory. Published records, when available, remain the source for batch-specific results.
Peptyed materials are for laboratory research only. A COA does not establish approval or suitability for human or veterinary use.
Ask about a batch recordA research procurement checklist.
Keep the product listing, material specification and batch record together when reviewing an order.
Confirm the material
- Exact identity. Match the full compound name, any label abbreviation and the product reference.
- Vial amount. Distinguish the listed amount per vial from the number of vials. An amount in mg is not a concentration.
- Blend composition. Request individual component amounts and the exact specifications. Do not infer a ratio from the combined listing.
Confirm the record
- Lot documentation. Match the report to the offered lot and review the methods and reported results.
- Supplier requirements. Confirm handling requirements and any missing specifications before placing an order.
Current product references
Find the listed vial amount and purchasing questions for Semaglutide (GLP-1), Retatrutide (GLP-3), Melanotan II, GHK-Cu, CJC-1295 / IPA and BPC-157 / TB-500.
Explore the research library: terminology, paper reading and evidence guides →