How to Buy Peptides Online
A comprehensive guide to purchasing research-grade peptides safely and confidently
Shop Research PeptidesWhat to Look for When Buying Peptides
1. Certificate of Analysis (COA)
A COA is the most important document when purchasing research peptides. It provides third-party verification of purity, identity, and quality. Every reputable vendor should provide a COA for each batch.
What a COA Should Include:
- • HPLC (High-Performance Liquid Chromatography) results
- • Mass spectrometry data
- • Purity percentage (should be 98%+)
- • Batch and lot numbers
- • Testing date and laboratory information
2. Purity Standards
Research-grade peptides should have a minimum purity of 98%. Higher purity ensures more accurate research results and reduces the presence of contaminants or degradation products. Always verify purity through third-party testing documentation.
3. Proper Storage & Handling
Peptides are sensitive to temperature, light, and moisture. Reputable vendors store peptides at -20°C or colder and ship with cold packs to maintain stability. Upon receipt, peptides should be stored in a freezer until reconstitution.
4. Vendor Transparency
Look for vendors who provide detailed product information including CAS numbers, molecular formulas, sequences, and molecular weights. Transparent vendors also clearly state that products are for research use only and provide responsive customer support.
Red Flags to Avoid
- •No COAs or testing documentation provided
- •Purity claims below 95% or unverified purity
- •Vendors making medical or therapeutic claims
- •No proper storage or shipping protocols
- •Lack of contact information or customer support
- •Prices significantly below market average
How Peptide Plus Meets These Standards
Growing COA Library: Lot-specific Certificates of Analysis are published in our COA Library as new lots are released and tested.
98%+ HPLC Purity Target: Lots are released to a 98%+ purity target with mass-spec confirmation, with the figure printed on each batch-specific COA.
Cold-Chain Shipping When Required: Temperature-sensitive lots ship with cold packs or dry ice; lyophilized peptides that are stable at ambient temperature for short transit times are shipped accordingly.
Fast U.S. Shipping: Quick delivery to minimize time in transit and reduce thermal exposure.
Research-Use-Only Compliance: All material is sold strictly for laboratory research and is not for human, veterinary, food, drug, diagnostic, therapeutic, or cosmetic use.
Research Use Only: All peptides sold by Peptide Plus are intended for laboratory research purposes only. Not for human consumption, veterinary use, or clinical applications. Products are sold to qualified researchers and institutions only.
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