FAQ

PrymaLab is an American-made peptide research supply company. We specialize in providing the purest research peptides, lyophilized peptide compounds, and liquid research chemicals to scientists, laboratories, and qualified researchers worldwide. Every product in our catalog is manufactured in the USA and guaranteed to meet 99%+ purity standards verified by HPLC testing in our own lab.

No. All PrymaLab products are supplied for in-vitro laboratory research only. They are not drugs, foods, cosmetics, medical devices, or dietary supplements, and they are not for human or veterinary use. PrymaLab does not provide guidance on administration, dosing, or physiological effects. Orders that indicate intended human use will be cancelled and the associated account closed. Handling, exposure, and first-aid information for laboratory personnel is provided in the Safety Data Sheet supplied with each product.

Most orders are processed and shipped the same day they are placed. Orders submitted after 12:00 PM EST will ship the following business day (excluding Sundays). Because all of our research peptides ship from within the United States, delivery times are exceptionally fast regardless of your chosen payment method.

We do not process orders by phone. We utilize a professional answering service that will forward your inquiry to our support team, but all research peptide orders must be placed directly through our website at PrymaLab.net to ensure accuracy and security.

Cards are accepted at checkout (Visa, Mastercard and Discover, credit or debit) for orders up to $1,000; card charges are processed in Mexican pesos (MXN), so your bank converts the amount at its own exchange rate and may add a small foreign-transaction fee. Orders can also be paid by Pay by Bank (an instant bank transfer through Link Money), Zelle, Cash App, or crypto through AURPAY (Bitcoin, USDT and other coins); these non-card methods get an extra 10% off, applied automatically at checkout. The payment method is chosen on the checkout page.

If your order did not process, try clearing your browser's cache or switching to a different browser. When you successfully click "Process Order," a processing status bar will appear — this typically completes within 30 seconds. If it takes longer than 2 minutes, contact our support team for assistance. Check your inbox and spam/junk folders for an automatic confirmation email, which is sent immediately upon successful completion. Our live chat is available from 9 AM–9 PM EST for real-time help.

Contact our support team as soon as possible and we will update your shipping information. If your order has already shipped with incorrect details, you will need to wait until the package is returned to our facility before we can reship it. We cover reshipping fees for domestic orders within the USA. International reship fees are the customer's responsibility.

Log into your account on PrymaLab.net to view your complete order history. If you placed an order before creating a free account, contact our support team and we will locate it for you.

You can reset your password using the password recovery page on our website. Simply enter the email address associated with your account to receive reset instructions.

Weekday orders go out by USPS with tracking, and the tracking number is emailed as soon as the label prints. When free shipping is selected, the carrier and service are chosen at PrymaLab's discretion.

All orders ship from Ashland, Kentucky, USA.

Free USA shipping over $100 and free worldwide shipping over $200; below those thresholds the carrier rate is shown at checkout.

Overnight options, where offered, are shown at checkout by destination; same-day dispatch applies to orders placed before 12 PM ET.

If your country does not appear at checkout, PrymaLab does not currently ship there; the destination list reflects local import rules for research chemicals and the carrier services available to us. Contact us before ordering if you think your country should be listed.

Tracking can take several hours to update after the label prints, and international packages often show no scans while they are in transit between countries or held in customs. If a tracking number has not moved for several business days, contact us with your order number and we will open a trace with the carrier.

Carrier delivery estimates are not guaranteed; weather, carrier volume and customs processing can add time. Check the tracking link in your shipping email first. If the package is well past the estimate or tracking has stopped updating, contact us with your order number and we will investigate with the carrier.

After customs release, the package is handed to the local postal service for final delivery, which can take several more days. Any duties, VAT or import fees are the customer's responsibility, and a package held for unpaid charges is not delivered until they are settled. If nothing has arrived within a week of customs release, contact us with your order number.

No. Packages are declared accurately as research chemicals; we cannot mark them as gifts.

Every lot is analysed by HPLC for purity and confirmed by mass spectrometry for molecular identity. Results are recorded on a lot-specific Certificate of Analysis, which is available with your order and in our COA library. If a delivered lot does not conform to the specification stated on its Certificate of Analysis, contact us within the period set out in our Return Policy.

All of our research peptides and liquid research chemicals are proudly manufactured in the United States. PrymaLab is committed to American-made quality, ensuring every product meets the highest standards of purity, potency, and scientific integrity.

Unopened, sealed products can be returned within 7 days of delivery under our Return Policy; opened or reconstituted products cannot be returned. Our third-party testing guarantee also applies: if an independent laboratory finds that a product is not the compound named on the label, or not at the purity and amount stated, we refund the order in full and reimburse the cost of the test. Email the lab report and your order number to michael@prymalab.net.

No. Funds added to a wholesale, white-label or 3PL partner account's prepaid balance are non-refundable once they are credited to the account. The balance pays that account's order invoices and carrier charges, and an order paid from it that is cancelled before it ships is credited back to the balance rather than refunded. Please add only what you expect to use. The full terms are in the Partner Prepaid Balances section of our Return Policy.

Yes. We use an independent third-party review platform. Reviews cannot be submitted directly from our website — the only way to leave a review is through a verified email sent after you receive your research peptides. Every review comes from a verified customer.

Lyophilized material is stable at ambient temperature in transit. On receipt, store lyophilized peptides at −20°C, desiccated and protected from light. Solutions should be stored at 2–8°C. Lot-specific storage conditions and shelf life are stated on the Certificate of Analysis and Safety Data Sheet supplied with each product.

Lyophilized is the scientific term for freeze-dried. It describes the state in which our research peptides are shipped and stored. Lyophilized peptides remain stable at room temperature for approximately two years and do not require refrigeration until reconstituted. This method preserves molecular integrity, purity, and potency throughout storage and transit.

Yes, completely normal. Most lyophilized research peptides appear as a solid mass, but shipping and handling may cause it to break apart and appear powdery. This does not affect purity, potency, or quality in any way.

No — this is perfectly normal. Some research peptides take a few moments to fully dissolve after reconstitution with bacteriostatic water. Gently roll the vial between your fingers to help. Never shake the vial, as this may damage the peptide's molecular structure.

Like all of our lyophilized research peptides, Melanotan 2 is stable at room temperature for approximately two years. Once reconstituted with bacteriostatic water, store in the refrigerator. For long-term storage, keep unreconstituted vials at −20°C or −80°C.

Yes, this is normal for certain liquid research chemicals. Vigorously shake the bottle before each use in your research experiments to ensure proper mixing and uniform concentration.

PrymaLab maintains strategic partnerships with specialized laboratories to produce the highest-purity research peptides available. Our peptides are synthesized using solid-phase peptide synthesis (SPPS) based on Fmoc or t-Boc chemistry to protect the alpha amino group during assembly. The process builds peptide chains from the C-terminus to the N-terminus — the reverse of natural protein synthesis. A deprotection agent removes the protective group, preparing it for coupling with the next amino acid via peptide bond formation. This cycle repeats until the full target sequence is assembled. Once complete, the peptide is cleaved from the resin, deprotected, precipitated, washed, and lyophilized into freeze-dried powder. Every batch undergoes HPLC purification and mass spectrometry analysis to confirm molecular identity, sequence accuracy, and purity.

Every research peptide undergoes rigorous quality verification: