Frequently Asked Questions

Research peptides are synthetic amino acid chains produced for in vitro laboratory research and experimental purposes. They are used by scientists, academic institutions, and licensed research facilities to study biological mechanisms, receptor interactions, and cellular pathways. All products sold by PepXClub are strictly for research use only (RUO).

No. All PepXClub products are labeled 'For Research Use Only' and are not intended for human or veterinary use. They are not FDA-approved drugs or supplements. Purchasers must agree to use products solely for legitimate research purposes.

Our products are available to verified researchers, academic institutions, and individuals aged 21 and older who intend to use them for lawful in vitro research. By purchasing, you confirm that you meet these requirements.

No special license is required to purchase research peptides in the United States. However, buyers must be 21+ and agree to our terms of use, which stipulate that products are for research purposes only.

All PepXClub peptides are manufactured to ≥99% purity as verified by High-Performance Liquid Chromatography (HPLC). Each batch undergoes rigorous quality control testing before release.

Yes. Every product ships with a batch-specific Certificate of Analysis that includes HPLC purity data, mass spectrometry confirmation, and net peptide content. COAs are also available for download on each product page.

We employ HPLC for purity analysis, mass spectrometry (MS) for molecular identity verification, and endotoxin testing (LAL) for applicable products. All testing is performed by third-party laboratories to ensure unbiased results.

Our LOT lookup tool allows you to enter your product's batch/lot number to view the specific COA and testing data for that manufacturing run. This ensures full traceability and transparency for every vial.

Lyophilized (freeze-dried) peptides should be stored at -20°C for long-term storage. Reconstituted peptides should be stored at 2-8°C and used within the timeframe specified on the COA. Avoid repeated freeze-thaw cycles.

Properly stored lyophilized peptides typically maintain stability for 24-36 months from the date of manufacture. Once reconstituted, most peptides should be used within 30 days when stored at 2-8°C. Refer to individual product COAs for specific stability data.

All orders are shipped with cold packs in insulated packaging to maintain product integrity. We offer standard and expedited shipping options. During warmer months, we may upgrade shipping at no additional cost to ensure proper cold-chain handling.

We accept major credit cards (Visa, Mastercard, American Express), cryptocurrency (Bitcoin, Ethereum), and bank transfers for institutional orders. All transactions are processed securely.

Domestic orders typically ship within 1-2 business days and arrive within 3-5 business days via standard shipping. Expedited options (overnight, 2-day) are available at checkout. International shipping times vary by destination.

Yes, we ship to most countries worldwide. Please note that international buyers are responsible for understanding and complying with their local regulations regarding the import of research peptides. Additional customs fees or duties may apply.

Due to the nature of our products and strict quality control requirements, we cannot accept returns on opened products. If you receive a damaged or incorrect item, please contact us within 48 hours of delivery with photos and your order number for a prompt resolution.

Research peptides sold for in vitro laboratory use are legal to purchase in the United States and many other countries. They are classified as research chemicals, not drugs or supplements. It is the buyer's responsibility to ensure compliance with local laws and regulations.

This designation means the product is intended exclusively for scientific research conducted in a controlled laboratory setting. It has not been approved by the FDA or any regulatory agency for therapeutic, diagnostic, or consumptive use in humans or animals.

We maintain standard business records as required by law. We do not voluntarily report individual purchases to regulatory agencies. However, we reserve the right to refuse service to anyone we suspect of intending to misuse our products.