Precision research peptides, batch-tested and documented.
USA Peptide Vendor supplies 33 research peptides — retatrutide, tirzepatide, semaglutide, BPC-157, HGH 191AA, NAD+ and more — as sealed 10-vial kits. Every lot ships with an independent HPLC purity report and mass-spec identity confirmation, dispatched from Delaware and Rotterdam.
- 98%+
- Minimum HPLC purity
- 10,000+
- Orders shipped worldwide
- 500+
- Research institutions
- 24h
- Dispatch on in-stock lots
- COA matched to your lot number
- HPLC + ESI-MS on every batch
- Dispatching from $25 per kit
3rd party
Independent HPLC + MS testing
24h
Dispatch on in-stock lots
2,410 laboratory reviews
Best-selling research peptides
The compounds laboratories reorder most often, in every vial strength we stock — with pricing per kit and per vial listed on each product page.
Six research focus areas
Every peptide in the catalog is grouped by the research area it is most commonly used in, so you can match a compound to the mechanism you are testing.
Bestsellers this week
How ordering works
No confusing checkout flows. You send an order request, a specialist confirms stock and freight, then your kits are packed with full analytical documentation.
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1 · Choose your kits
Select the peptide, vial strength and kit quantity from the product page. Every size option shows its price, SKU and lot availability.
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2 · Send an order request
Submit your order request with the delivery country. Our team confirms stock, freight and any bulk pricing within one business day.
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3 · Payment & packing
Pay by bank transfer (Revolut, Chime), Apple Pay or crypto (Bitcoin, USDT, USDC). Kits are packed the same day with the batch-matched certificate of analysis inside.
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4 · Tracked delivery
Dispatch from Delaware or Rotterdam with tracking. US 2–4 days, EU 4–8 days, UK 3–7 days, most other regions 5–10 days.
What is inside every kit
- HPLC purity reportReverse-phase HPLC at 214 nm with column, gradient and integration details stated.
- Mass-spec identityObserved mass versus theoretical mass for your exact sequence, lot matched.
- Storage & handling sheetDiluent guidance, stability windows and shipping conditions for your compound.
- Lot traceabilityOne lot number across vial label, box label and certificate — auditable end to end.
Dispatched for the USA and Europe
Two warehouses, one standard. Orders inside the United States ship from Delaware; EU and UK orders are consolidated in Rotterdam to keep customs transit short and predictable.
| Region | Transit | Shipping |
|---|---|---|
| United States | 2–4 business days | Free over $150 |
| European Union | 4–8 business days | Free over €180 |
| United Kingdom | 3–7 business days | Free over £160 |
| Canada & rest of world | 5–10 business days | Calculated at checkout |
Import duties and local taxes are assessed by the destination customs authority and are the buyer’s responsibility. See the refunds and shipping policy for full details.
Need volume pricing or a standing order?
We supply research groups, CROs and distributors with consolidated freight, scheduled lot releases and reserved inventory. Send your required quantities and destination and we will return a formal quotation with COA reference numbers.
- Price breaks from 5 kits
- One business day response
- Named account specialist
CUSTOMER REVIEWS
Trusted by research teams
Feedback from laboratories, contract research organisations and university peptide facilities that order from us on a recurring basis.
Average across verified order reviews · USA, EU and UK customers
“The COA arrived matched to the lot on the vials, with column and gradient stated. That is the level of documentation we require before a peptide can enter our assay pipeline.”
“We order retatrutide and tirzepatide kits in bulk for comparative signalling work. Sizes are consistent, fill weights match the certificate, and EU dispatch from Rotterdam avoids customs drama.”
“Replacement of a damaged shipment was handled in a day, no argument, with the replacement lot documented. That is why we keep our standing order with them.”