Last Updated: July 26, 2026
Orders placed before 2:00 PM EST on business days are typically dispatched the same day. We maintain inventory of our research products to minimize fulfillment delays and ensure prompt order processing.
Once your order has been shipped, you will receive a confirmation email containing your tracking number.
Business Days: Monday through Friday, excluding U.S. federal holidays.
Orders placed after the daily cutoff time, on weekends, or on holidays will be processed and shipped on the next business day.
| Shipping Method | Estimated Delivery | Details |
|---|---|---|
| USPS First Class | 3–5 Business Days | Standard shipping with tracking |
| USPS Priority Mail | 2–3 Business Days | Faster delivery with tracking |
| USPS Priority Mail Express | 1–2 Business Days | Expedited shipping with guaranteed delivery window (where available) |
All peptides are supplied as lyophilized (freeze-dried) powders, providing excellent stability during transit under normal ambient conditions. Upon delivery, products should be transferred to appropriate storage conditions (−20°C or colder) for long-term preservation.
Every shipment is carefully packaged to help maintain product integrity throughout transit.
Each order includes:
Individually sealed and labeled vials displaying the compound name, lot number, and quantity
Protective packaging designed to minimize the risk of breakage and light exposure
A Certificate of Analysis (COA) corresponding to each production lot
Discreet, unbranded exterior packaging for privacy
Peptenor Labs currently ships within the United States only.
Orders submitted with international shipping addresses cannot be fulfilled and will be cancelled with a full refund.
We do not ship to:
International destinations (including restricted U.S. territories)
Freight forwarding or mail forwarding services
APO, FPO, or DPO military addresses
P.O. Boxes for USPS Priority Mail Express shipments
If your shipment is marked as delivered but has not been received, or if it arrives damaged, please contact us within 72 hours of the recorded delivery date.
When contacting our support team, please provide:
Your order number
Photographs showing any shipping damage (if applicable)
We will work with the shipping carrier to investigate the issue and, where appropriate, arrange a replacement shipment or issue a refund.
Peptenor Labs is not responsible for packages that are lost or stolen after the carrier has confirmed successful delivery. Whenever possible, we recommend shipping to a secure address where someone is available to receive the package.
