Our testing standard
Quality is established before a vial ever reaches your lab. Every batch we supply is independently verified against a concrete standard, not a vague "high purity" claim:
- Identity by mass spectrometry - confirms the molecule is exactly what the label says.
- Purity by HPLC - quantifies purity against a 99%+ target.
- Independent third-party labs - the supplier does not grade its own work.
- Lot tracking - every vial traces to a specific synthesis and test record, which is what makes a COA meaningful.
What is on a COA
A complete Certificate of Analysis names the compound and lot number, the test methods used (mass spectrometry for identity, HPLC for purity), the measured purity result, and the testing date. That documentation is the difference between research-grade material and unverified powder - and it is the foundation of a trustworthy research result.
Certificates by product
The current lot COA for any product below is available on request. When a published certificate is posted it appears as a direct download here.
| Research peptide | Category | COA |
|---|---|---|
| BPC-157 | Healing & Recovery | Request COA |
| TB-500 | Healing & Recovery | Request COA |
| KPV | Healing & Recovery | Request COA |
| GHK-Cu | Healing & Recovery | Request COA |
| CJC-1295 | Growth Hormone & Muscle | Request COA |
| Ipamorelin | Growth Hormone & Muscle | Request COA |
| GHRP-6 | Growth Hormone & Muscle | Request COA |
| GHRP-2 | Growth Hormone & Muscle | Request COA |
| IGF-1 LR3 | Growth Hormone & Muscle | Request COA |
| Hexarelin | Growth Hormone & Muscle | Request COA |
| Semaglutide | Fat Loss & Weight Management | Request COA |
| Tirzepatide | Fat Loss & Weight Management | Request COA |
| AOD 9604 | Fat Loss & Weight Management | Request COA |
| Tesamorelin | Fat Loss & Weight Management | Request COA |
| Epithalon | Anti-Aging & Longevity | Request COA |
| Thymosin Alpha-1 | Anti-Aging & Longevity | Request COA |
| Selank | Cognitive & Neurological | Request COA |
| Semax | Cognitive & Neurological | Request COA |
| Cerebrolysin | Cognitive & Neurological | Request COA |
| Dihexa | Cognitive & Neurological | Request COA |
| N-Acetyl Semax Amidate | Cognitive & Neurological | Request COA |
| PT-141 | Sexual Health & Tanning | Request COA |
| Melanotan II | Sexual Health & Tanning | Request COA |
| Melanotan I | Sexual Health & Tanning | Request COA |
| Kisspeptin | Sexual Health & Tanning | Request COA |
| Gonadorelin | Specialty | Request COA |
| HCG | Specialty | Request COA |
| DSIP | Specialty | Request COA |
| VIP | Specialty | Request COA |
Request a Certificate of Analysis
Frequently asked questions
What is a Certificate of Analysis (COA)?
A Certificate of Analysis is an independent laboratory document that verifies a research peptide lot - its identity (confirmed by mass spectrometry) and its purity (quantified by HPLC). It ties a specific vial to a tested, lot-tracked batch.
Are your research peptides third-party tested?
Yes. Every lot Peptides Factory Direct ships is third-party tested to a 99%+ purity target, with identity confirmed by mass spectrometry and purity quantified by HPLC. A COA is available on request for the exact lot you receive.
How do I get the COA for my order?
Request it with the form on this page, or reply to your order email with the product and lot number. We send the matching lot COA.
What purity standard do you hold?
A 99%+ purity target, verified by an independent third-party lab rather than an in-house claim. The purity and identity methods are named on every certificate.
Why does a COA matter when choosing a supplier?
Publicly verifiable, third-party purity documentation is the single strongest trust signal in the research-peptide market. A vial without a genuine COA cannot be trusted for research.
How to choose a research peptide supplier · Purity & COA guide · Research library
External references: Certificate of analysis (Wikipedia) · High-performance liquid chromatography (Wikipedia) · U.S. Food and Drug Administration