NorthPeptide Shipping and Handling: What to Expect

By the NorthPeptide Research Team

Why Lyophilized Peptides Don't Need Cold Shipping

A common question from first-time buyers is whether peptides need refrigerated shipping. The answer depends on the form. Reconstituted (liquid) peptide solutions are temperature-sensitive and should be refrigerated. But lyophilized (freeze-dried) peptides — which is how NorthPeptide ships all its products — are stable at room temperature for about 2 weeks (the most delicate) to about 12 weeks (the most robust), depending on the specific compound.

Lyophilization removes essentially all water from the product by freezing it and then reducing pressure to allow ice to sublimate directly to vapor. The result is a dry powder that doesn't support the enzymatic and chemical degradation reactions that require water as a medium. This is why lyophilized peptides can be shipped without ice packs and why they have shelf lives of 12–24 months when stored properly.

Packaging Standards

Primary Packaging

Each vial is sealed with a rubber stopper and aluminum crimp cap, then placed in an individual protective sleeve. Vials are inspected before packaging to confirm the lyophilized cake is intact, the cap is properly crimped, and there is no visible moisture or discoloration.

Secondary Packaging

Every order is packed in a padded, insulated poly mailer with sufficient cushioning material to prevent vial-to-vial contact and absorb impact. For orders of multiple vials, each vial is individually wrapped to prevent glass-to-glass contact.

Discretion

Packages are shipped without branding that identifies the contents as peptides or research chemicals. The return address reflects our shipping facility, not our brand name. This is standard practice in the research chemical industry and protects both the sender and recipient in jurisdictions where customs inspection of labeled peptide shipments can create delays.

Processing and Shipping Timelines

Orders placed before 2:00 PM (local time) on business days are typically processed the same day and handed to the carrier within 1–2 business days. Every domestic order then ships UPS 2nd Day Air, which UPS guarantees to deliver within 2 business days of leaving our facility. There is no slower option to choose from, and no faster one to pay for.

Note that the 2-day guarantee covers transit only. It begins when the parcel is handed to the carrier, not when the order is placed, so allow for the processing window above as well.

International Shipping and Customs

NorthPeptide ships to the United States and Canada only; checkout does not accept a delivery address in any other country. Canadian shipments are accompanied by appropriate customs documentation describing the contents accurately as research chemicals.

Canadian transit times may vary with customs processing, which is outside the carrier's guarantee. We cannot control customs processing speed, but we document all shipments in a way that facilitates clearance rather than complicating it.

Damaged or Defective Orders

If your order arrives damaged or defective, contact us with your order number and photos and we will make it right. For Canadian orders, customers are responsible for their own local import compliance; we cannot guarantee customs clearance and do not reship orders seized by customs. See our shipping policy for details.

What to Do When Your Order Arrives

Upon receipt: inspect the outer packaging for damage before opening. Open carefully and check each vial for intact cap, intact lyophilized cake (visible through glass), and no signs of moisture or discoloration. If anything looks off, photograph it before touching the vial and contact us immediately with the photos — this is necessary for any quality claim to be processed.

Once you confirm the order is intact, store lyophilized vials in a cool, dry location away from direct light. Refrigeration or freezing is ideal for long-term storage. Room temperature storage is acceptable for short periods only: about 2 weeks for the most delicate peptides and about 12 weeks for the most robust.

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