Source comparison
Real Peptides Sermorelin vs Competitors Quality: Full Comparison
The table below compares manufacturing, verification, and support standards across peptide supplier categories. Real Peptides represents the small-batch synthesis model; Contract Lab Resellers purchase from third-party manufacturers and rebrand; Bulk Importers
This comparison does not assign a generated winner or score.
- The table below compares manufacturing, verification, and support standards across peptide supplier categories. Real Peptides represents the small-batch synthesis model; Contract Lab Resellers purchase from third-party manufacturers and rebrand; Bulk Importers source directly from overseas synthesis facilities.
- Synthesis Method
- Small-batch SPPS with per-step Kaiser test verification
- Automated batch SPPS, no intermediate verification
- Large-scale automated synthesis, minimal process control
- Only small-batch SPPS with stepwise checks catches errors before propagation
- Purity Verification
- Third-party RP-HPLC-ESI-MS + AAA by ISO 17025 lab
- In-house HPLC only, self-generated COA
- Basic UV absorbance or supplier-provided certificate
- Independent MS confirmation is non-negotiable for sequence accuracy
- Batch Documentation
- Complete synthesis log from raw materials to lyophilisation
- Reseller documentation only, no synthesis records
- Generic COA with batch number, no traceability
- Traceability to raw material lot numbers proves process control
- Typical Purity Range
- 98–99.5% (HPLC area under curve)
- 92–97% (wide variance between batches)
- 85–95% (frequent contamination with deletion sequences)
- Anything below 98% suggests synthesis errors or inadequate purification
- Storage & Shipping
- Lyophilised at −20°C, shipped with cold packs, 48-hour delivery
- Room-temperature lyophilisation, standard shipping
- Lyophilised storage undefined, international shipping delays
- Temperature excursions during shipping degrade peptides irreversibly
- Customer Support
- Direct access to synthesis chemists for protocol questions
- Email-only support, no technical expertise
- No support beyond order processing
- Technical consultation from actual chemists matters when troubleshooting experiments