Understanding Peptide Purity Grades: GMP vs Research vs Cosmetic
Helix Peptide explains the differences between product grades and helps buyers select the right specification for their application.
Choosing the Right Grade for Your Application
Not all peptide products are manufactured to the same standard. Helix Peptide offers four distinct grades, each designed for specific use cases.
Research Grade
Best for: Laboratory research, in vitro studies, assay development
- Purity typically ≥98.0% by HPLC
- Identity confirmed by MS
- COA with batch-specific data included
- No endotoxin or sterility testing (available on request)
- Most cost-effective option for non-clinical work
GMP Grade
Best for: Clinical trial material, pharmaceutical API supply, IND-enabling studies
- Purity ≥99.0% with defined impurity profiles
- Full GMP documentation package
- Endotoxin, bioburden, and sterility testing per USP requirements
- Stability data available
- Manufactured under validated processes with change control
Cosmetic Grade
Best for: Skincare formulation, topical product development
- Purity ≥98.0% with heavy metal screening
- Microbial limits testing per cosmetic standards
- INCI naming support available
- Compatible with standard cosmetic excipient systems
USP Grade
Best for: Reconstitution solvents and ancillary materials
- Meets United States Pharmacopeia monograph requirements
- Sterility and endotoxin testing included
- Suitable for use with GMP and Research grade peptides
How to Decide
| Application | Recommended Grade | |-------------|-------------------| | Cell culture studies | Research | | Preclinical in vivo | Research or GMP | | Phase I clinical trial | GMP | | Topical skincare product | Cosmetic | | Peptide reconstitution | USP (solvents) |
Questions about grade selection? Our technical team is available at tech@helixpeptide.com.