Every lot is tested by an independent ISO 17025-accredited laboratory before release. The certificate of analysis reports HPLC purity, mass-spectrometry identity confirmation, and appearance — and it is issued against the specific lot you receive, not a representative batch. You can look up any lot's COA from the code printed on the vial label.

Orders are processed Monday to Friday, excluding U.S. federal holidays, within 1–2 business days. Orders placed before 5:00 pm Eastern on a business day ship the same business day. We ship FedEx 2-day standard with tracking, within the United States only. Shipping is a flat $14.99, and free on orders of $200 or more.

Store lyophilized vials sealed at -20 °C, protected from light and moisture. Solutions such as bacteriostatic water are stored at controlled room temperature. The exact storage conditions for this item are listed in the specifications on this page and printed on its certificate of analysis.

Compounds ship as lyophilized (freeze-dried) powder, which is stable at ambient temperature for the duration of transit, so orders travel in standard parcel packaging without cold-chain shipping. Short periods at room temperature in transit are normal and expected. Purity is verified at lot release.

For volume pricing, email care@peptriva.com with the items and quantities you need and we'll come back with pricing and lead time.

Each lot carries a best-by date on the vial label and on its certificate of analysis. Stored as directed, lyophilized material is typically stable for 24 months. Actual stability depends on the sequence and on storage conditions after delivery.