Why a COA Matters in Peptide Research
A Certificate of Analysis (COA) is the single most important quality document accompanying any research peptide. It provides independent verification of identity, purity, and safety, allowing researchers to confirm the material meets specification before use.
Key Sections of a COA
1. Product Information
- Sample Name: The compound being tested (e.g., Retatrutide 10mg)
- Lot/Batch Number: Unique identifier for the tested batch
- Sample Type: Should state “White lyophilized powder”
- Molecular Weight: Confirms the correct compound
2. Analytical Methods
Legitimate COAs always state the methods used. Look for:
- MALDI-MS or ESI-MS: Confirms molecular identity
- RP-HPLC: Measures purity (typically at 214 nm)
- HPLC Quantitation: Measures actual content (mg per vial)
- Endotoxin Testing: USP <85> specification
- Heavy Metals: USP <232> specification
3. Test Results
Each result should include a specification and a pass/fail status. A typical COA reports purity, content, endotoxin, and heavy metals screening, along with the analytical method used for each test.
4. Certification Statement
The bottom of the COA should include a signed certification from the testing laboratory confirming the material meets specification.
Red Flags to Watch For
- No lot number listed
- No molecular weight confirmation
- Vague purity claims (“high purity” instead of a specific percentage)
- No testing method stated
- Missing endotoxin or heavy metals screening
Vlora Peptides COA Policy
Every batch supplied by Vlora Peptides is tested by an independent third-party laboratory. Batch-specific COAs are available for download on our COA Library page.
⚠️ FOR RESEARCH USE ONLY. Not for human or animal consumption. Products are supplied strictly for in-vitro laboratory research and development.