We offer Flat Rate Ground (3–5 business days, $14.99), Priority 1–3 Day Shipping ($19.99), FREE standard shipping on orders of $100 or more, and FREE Priority shipping on orders of $250 or more within the United States. Orders placed Saturday or Sunday ship Monday. All products are shipped as lyophilized (dry) reference standards in sealed vials. For shipping-related questions, see our Shipping Policy or contact us directly.

Shipping Protection is included free on every order. It covers a free reship or refund for orders lost in transit. Damaged in transit: return the product with the prepaid label we provide, then we ship a free replacement — or issue a refund if the item is out of stock or you prefer one. To file a claim, log in and visit the Claims tab in My Account, or click “File a shipping claim” on the order. Claims must be filed within 30 days. See our Shipping Protection coverage page for full details.

We currently ship within the United States only. International shipping may become available in the future.

Precisely Peptides, LLC is a USA-based business. Orders are packed and shipped from the United States by our own team, and we sell to customers in the United States only — we are not a reseller forwarding parcels from overseas. Separately, our research peptides are USA-sourced and synthesized in the USA, and every lot is tested by an independent, USA-based, ISO/IEC 17025-accredited laboratory. See About Precisely Peptides for the full picture.

A Certificate of Analysis (COA) is a document provided by an independent, USA-based, ISO/IEC 17025-accredited third-party laboratory that verifies the identity, purity, and composition of a research peptide. Every peptide we ship includes a downloadable COA accessible from its product page.

For proper storage and handling procedures, please refer to the Certificate of Analysis for the relevant peptide lot. All products should be kept away from direct sunlight and moisture.

Yes. The Precisely Promise backs every order with a 30-day satisfaction guarantee on unopened products (refund of the product price, no restocking fee; original shipping is not refunded and return shipping is the customer's responsibility) and Shipping Protection included free on every order. Every peptide in your order is covered by the 99%+ Peptide Purity Guarantee backed by an independent COA (full refund plus free replacement, and we reimburse your test cost, if a peptide ever tests below its stated purity). See our Refund & Return Policy.

Return any unopened, factory-sealed product within 30 days of delivery for a refund of the product price — no restocking fee. Original shipping is not refunded and return shipping is the customer's responsibility. Opened or unsealed vials cannot be returned for change-of-mind reasons, but peptide quality concerns are covered by our 99%+ Peptide Purity Guarantee, and wrong or missing items are replaced free within 7 days. See our Refund & Return Policy for full details.

Yes — every completed order earns 1 point per $1 spent (plus 100 bonus points for your first order). Points convert to discounts on future orders three ways: a flat dollar discount, a percent-off coupon, or a “cheaper item free” cart bonus. As your lifetime points grow you advance through four tiers — Member → Researcher → Senior Researcher → Principal Investigator — each unlocking better earn rates and improved redemption rates. All loyalty members ship free at $75+ — below the storewide $100 — and Principal Investigators ship free on every order with no minimum. (Storewide: free standard shipping at $100+, free Priority at $250+.) Points expire 12 months from earning. Visit the Loyalty Program page for full tier benefits and your dashboard.