Frequently Asked Questions
Testing, shipping, payment, storage and returns — the questions researchers ask us most.
Answers to the questions researchers ask us most. Can’t find yours? Email support@peptidelabsonline.com.
What does “research use only” mean?
It means our products are sold exclusively for in-vitro laboratory research. They are not drugs, supplements or cosmetics, and they are not intended for use in humans or animals. We do not provide dosing or health guidance of any kind.
Are your peptides third-party tested? Can I get a Certificate of Analysis?
Yes. Every batch is analyzed by reversed-phase HPLC for purity and by mass spectrometry to confirm identity, and a Certificate of Analysis is available for the lot you receive. Email us with your product or order number and we will send the COA for your exact lot.
How are peptides shipped, and how fast?
Orders ship from within the USA within one to two business days of payment clearing, packaged to keep lyophilized product cold and dry. Domestic delivery is usually 2–5 business days, and every order is tracked. Shipping is $12 flat, or free over $75.
Do the vials need refrigeration when they arrive?
Lyophilized (freeze-dried) peptides are stable for short periods at ambient temperature, which is why standard shipping is fine. On arrival, move them to cold storage as described on the product page and in our storage and handling guide. Once reconstituted, storage requirements change.
What payment methods do you accept?
We accept cryptocurrency, bank transfer, Zelle, Cash App and Venmo. Your order is held as Pending payment until the funds clear, then we dispatch. Sending your order number with the payment speeds things up.
Why don’t you take credit cards?
Card networks generally will not process research-peptide purchases, so rather than risk sudden account freezes that would delay your orders, we use reliable offline methods instead. A side benefit: we never see or store your card details.
Do you ship internationally?
We currently focus on domestic US shipping. If you are outside the US, email us before ordering and we will tell you honestly whether we can serve your location. Buyers are responsible for any import rules and duties.
How do I reconstitute a peptide?
Our reconstitution guide walks through the general laboratory procedure using bacteriostatic water. It is written as reference for researchers and contains no dosing information.
What is your return policy?
Unopened, sealed items can be returned within 14 days, and anything we shipped wrong or that arrives damaged is replaced or refunded in full. For safety and integrity, opened or reconstituted vials cannot be returned. See our returns policy for the details.
How do I track my order?
You will receive a tracking link by email once your label is created. You can also use our order tracking page with your order number.