Our research peptides are available at high purity levels, typically ≥98% purity as verified by HPLC analysis. Each batch is tested to ensure consistency and quality. A Certificate of Analysis (COA) is available for all products upon request.

Our peptides are synthesized using solid-phase peptide synthesis (SPPS), the industry standard for producing high-quality research-grade peptides. This process ensures:

• Precise amino acid sequence control
• Consistent batch-to-batch quality
• High purity output verified by HPLC and mass spectrometry
• Proper lyophilization for long-term stability

Yes. Certificates of Analysis are available for all PepCell products. COAs include HPLC purity data, mass spectrometry confirmation, and batch-specific information. You can find lab reports in our Lab Reports section or request one directly through our Contact page.

We offer our research peptides in multiple sizes to accommodate different research needs. Common vial sizes include 2mg, 5mg, and 10mg. Specific size availability varies by product — please check the individual product pages for available options.

You can place an order directly through our website:

• Browse products in our Shop
• Select the desired size and add to cart
• Create an account or check out as guest
• Complete payment at checkout

For bulk or custom orders, please contact us directly.

We currently ship within the United States. All orders are shipped from our US-based facility. International shipping availability may vary — please contact us for inquiries about international orders.

Standard shipping typically takes 3–7 business days within the United States. Expedited shipping options may be available at checkout. Orders are usually processed and shipped within 1–2 business days of payment confirmation.

All peptides are shipped in lyophilized (freeze-dried) form to ensure stability during transit. Products are packaged with cold chain considerations and shipped in discreet, secure packaging to maintain product integrity upon arrival.

Due to the nature of research chemicals and quality control requirements, we generally do not accept returns once a product has been shipped. However, if you receive a damaged or incorrect product, please contact us within 48 hours of delivery with photos and your order number, and we will work to resolve the issue.

Proper storage is essential to maintain peptide integrity:

• Lyophilized (dry) peptides: Store at -20°C in a frost-free freezer, away from light and moisture
• Reconstituted peptides: Store at -80°C and use within 30 days
• During transit: Keep away from heat sources

Avoid repeated freeze-thaw cycles. Aliquot solutions into single-use volumes when possible.

When stored correctly at -20°C in lyophilized form, most research peptides maintain their integrity for 24 months or longer. Stability can vary depending on the specific peptide sequence. Refer to the COA for product-specific stability information.

For reconstitution in a research laboratory setting:

• Allow the vial to reach room temperature before opening
• Add sterile water, PBS, or an appropriate solvent slowly along the vial wall
• Gently swirl — do not vortex vigorously
• Allow to dissolve fully before use

Every batch of PepCell peptides undergoes rigorous quality testing including:

• HPLC analysis — to verify purity (≥98%)
• Mass spectrometry (MS) — to confirm molecular identity
• Visual inspection — appearance and physical characteristics
• Documentation review — traceability and batch records

All results are documented in the Certificate of Analysis available for each product.

PepCell products are available to licensed researchers, scientists, and qualified professionals for laboratory and scientific research purposes only. By purchasing, you confirm that:

• You are 21 years of age or older
• You are a qualified researcher or scientist
• Products will be used solely for laboratory research
• You understand these products are not for human consumption

No. PepCell research peptides are not FDA approved for human consumption, medical diagnosis, treatment, or therapeutic use. They are sold exclusively for in vitro and laboratory research purposes. These products have not been evaluated by the Food and Drug Administration.

The legality of purchasing and possessing research peptides varies by jurisdiction, intended use, and the specific compound. In the United States, many research peptides are legal to purchase for legitimate scientific research purposes. However, it is your responsibility to understand and comply with all applicable laws in your location before purchasing.

PepCell does not provide legal advice. Consult with a legal professional if you have questions about the legality of specific compounds in your jurisdiction.

You can review our full legal documentation here:

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