Frequently Asked Questions
Last updated: September 2, 2026
Ordering & Payment
How do I place an order?
Add products to your cart and complete checkout. No account is required, checkout is anonymous. You will enter your shipping details, confirm the research-use attestation, and pay.
What payment methods do you accept?
Major credit and debit cards (Visa, Mastercard, American Express, Discover), Cash App, and Bitcoin/Lightning. The available methods are shown at checkout.
Do I need a prescription to order?
No. Our products are sold for laboratory research to qualified buyers and are not intended for clinical or therapeutic use, so no prescription is required or accepted.
Can I change or cancel my order?
Orders that have not yet shipped can be canceled for a full refund. Email support@peerlesspeptides.com with your order number. Once an order ships it cannot be canceled. See Returns & Refunds.
Who can purchase from Peerless Peptides?
Our products are sold to qualified researchers and scientific professionals for laboratory research use only. At checkout you confirm your research qualification and agree to our Research-Use Acknowledgement and Terms of Service.
Shipping & Delivery
When will my order ship?
Orders ship within 24 hours of confirmation, excluding weekends and U.S. federal holidays. Tracking is emailed when your order is dispatched. Full details are on our Shipping page.
How long does delivery take?
Transit time depends on the tier you choose at checkout: Standard (UPS Ground) is 1 to 5 business days, 2-Day (UPS 2nd Day Air) is 2 business days, and Overnight (UPS Next Day Air Saver) is 1 business day. Transit time starts when the order is dispatched, which is within 24 hours of confirmation on business days. Business days are Monday through Friday, excluding U.S. federal holidays.
What does shipping cost?
Rates are flat by service tier and shown at checkout, which is the authoritative source for your order: Standard $20, 2-Day $35, Overnight $60. See Shipping.
Do you ship internationally?
No. We currently ship within the United States only.
Do you offer free shipping?
Yes, free Standard shipping on U.S. orders over $200. Expedited tiers (2-Day, Overnight) are charged at their regular rates.
How do I track my order?
A tracking link is emailed when your order ships. It may take up to two business days to appear after order confirmation.
Do you ship to P.O. boxes?
Yes. Orders normally ship via UPS, which cannot deliver to P.O. boxes, so an order addressed to a P.O. box ships via USPS Priority Mail instead. For the fastest service on the 2-Day and Overnight tiers, provide a street address.
How are orders packaged, and do they need cold shipping?
Our peptides are lyophilized (freeze-dried) and are stable at ambient temperature for standard transit. Everything we ship, laboratory supplies included, travels at room temperature and does not require cold-chain handling or ice packs. Orders ship in plain, unbranded outer packaging.
What if my package is delayed or lost?
If tracking shows “delivered” but you have not received your order, contact the carrier and notify us within seven days. We send a free replacement for shipments verified as lost in transit. See Shipping and Returns & Refunds.
Returns & Support
What is your return policy?
Because our products are research chemicals, all sales are final once an order ships. We refund or replace orders that arrive damaged, incorrect, out of specification, or undelivered. See Returns & Refunds for the full policy.
What if my order arrives damaged or incorrect?
Email support@peerlesspeptides.com within seven days of delivery with your order number and photos. We will arrange a refund or free replacement.
How do I contact support?
Email support@peerlesspeptides.com. Include your order number and a description of the issue; we respond within one to two business days.
Quality & Certificates of Analysis
Do you provide a Certificate of Analysis (COA)?
Yes. A per-batch Certificate of Analysis is available for every peptide, issued by an independent ISO/IEC 17025-accredited laboratory (ILS Laboratories) and verifiable at the lab's portal. Laboratory supplies are resold as manufactured and are outside that program. See our Certificates of Analysis.
How are your products tested, and what purity can I expect?
Each batch is independently tested by a third-party laboratory for identity and purity by HPLC, with additional analyses covering endotoxin, a microbial screen and elemental impurities. The measured purity for each batch is reported on its Certificate of Analysis, which is published per lot.
If a purity result is below 100%, what is the remainder?
The remainder reflects minor process-related components: typically truncated or deletion sequences from synthesis, counter-ions and residual salts, and bound water. These are characterized during purification, and the purity figure for each batch is reported on its COA.
Can I get lot information before ordering?
Yes. Contact support@peerlesspeptides.com and we will share the current lot's Certificate of Analysis.
Products & Storage
What are peptides?
Peptides are short chains of amino acids linked by peptide bonds. In research settings they are studied for their structure, receptor-binding characteristics, and biochemical activity.
Are products supplied lyophilized or in solution?
Our peptides are supplied as lyophilized (freeze-dried) powder in sealed vials. Laboratory supplies are supplied in the manufacturer's own form.
How should I store my products?
Store unopened, lyophilized vials cool, dry, and protected from light. Some compounds are best kept refrigerated or frozen for long-term storage, refer to the product label and Certificate of Analysis. Proper storage after delivery is the responsibility of the customer.
Research Use & Compliance
What does “Research Use Only” mean?
It means a product is supplied solely for laboratory research by qualified researchers. It is not a drug, dietary supplement, food, or cosmetic; it is not approved by the FDA for any use; and it is not intended for human or animal consumption or for any clinical, diagnostic, or therapeutic purpose. See our Research-Use Acknowledgement.
Are your products intended for human consumption?
No. They are intended exclusively for laboratory and in-vitro research by qualified professionals, and not for human or animal consumption or any clinical, diagnostic, or therapeutic use.
Do you sell bacteriostatic water?
Yes. We list a 30 mL vial of bacteriostatic water as a laboratory supply. It is not covered by our per-batch Certificate of Analysis program, so no COA is issued for it. We publish no instructions for use and no handling or preparation guidance for this or any other item. See Bacteriostatic Water.
Do you provide dosing or usage protocols?
No. We do not provide dosing, administration, reconstitution-for-use, or protocol guidance of any kind, and we cannot advise on use in humans or animals. The scientific information on this site describes what the published research literature reports in laboratory and animal models, it is not instructions for use.