📦 Shipping & Returns

Discreet, Tracked, Cold-Chain Ready

Every order is hand-packed, vacuum-sealed, and shipped in plain, unmarked packaging from our U.S. fulfillment facility. Cold-pack protection is included on temperature-sensitive compounds at no extra cost.

USPS Priority & UPS Ground Free shipping over $250 1–3 business day handling

Last updated: May 14, 2026

Processing & Handling

Orders placed Monday through Friday before 12:00 PM EST are typically processed and dispatched the same business day. Orders placed after 12:00 PM EST or on weekends and U.S. holidays are processed the next business day. You will receive an email with tracking information as soon as your label is generated.

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Same-Day Dispatch

Orders before 12pm EST ship the same business day, Monday through Friday.

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Cold-Chain Protection

Heat-sensitive compounds ship with insulated mailers and ice packs at no extra cost.

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Plain Packaging

No branding, logos, or product references appear on the outside of the package.

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Full Tracking

Every order ships with end-to-end tracking included in your shipment confirmation email.

Domestic Shipping (United States)

We ship to all 50 U.S. states and U.S. territories via USPS Priority Mail and UPS Ground. Standard transit time is 2–5 business days after dispatch.

  • Standard (under $250): $9.95 flat-rate USPS Priority Mail
  • Free Shipping: Orders of $250 or more ship free, automatically applied at checkout
  • Expedited: UPS 2-Day available at checkout for an additional fee

Free shipping over $250

Add eligible items to your cart and the standard shipping charge is automatically removed at checkout. No code required.

International Shipping

At this time, ZC Labs ships exclusively within the United States. We do not ship internationally due to varied import regulations on research compounds. We are actively evaluating Canadian shipping options and will update this page when available.

Address Accuracy

Customers are responsible for providing a complete and accurate shipping address at checkout. If a package is returned to us due to an incorrect address, an undeliverable address, or refusal of delivery, the customer is responsible for re-shipping costs ($9.95 USPS / actual UPS cost). We will contact you by email to confirm before re-shipping.

Lost, Stolen, or Damaged Packages

Once a package is marked “Delivered” by the carrier, responsibility transfers to the customer. We strongly recommend shipping to a secure address or a private mailbox.

  • Lost in transit: If tracking shows no movement for 7+ business days, contact us and we will open a carrier investigation.
  • Damaged in transit: Photograph the package and contents within 48 hours of delivery and email us. We will replace damaged items at no cost once verified.
  • Marked delivered but missing: Please check with neighbors, household members, and your local post office first. If still missing, contact us within 5 days for assistance with a carrier claim.

Returns & Refunds

Because our products are research-grade chemical compounds, we are unable to accept returns of opened, used, or compromised items for safety, contamination, and chain-of-custody reasons.

We will issue a full refund or replacement when:

  • The item arrived damaged or contaminated, with photo evidence provided within 48 hours
  • The wrong item was shipped (we will provide a prepaid return label)
  • The item is materially different from its product description or COA
  • The order was lost in transit and a carrier claim has been filed

How to request a refund or replacement

  1. Email support within 7 days of delivery with your order number and a description of the issue.
  2. Include clear photos of the product, packaging, and shipping label if reporting damage.
  3. Our team will respond within 1 business day with next steps.
  4. Approved refunds are issued to the original payment method within 3–5 business days.

Order Cancellation

You may cancel an order at no charge if it has not yet been processed for shipping. Once a tracking number has been generated, the order is in transit and cannot be canceled — but you may decline delivery and we will refund the order minus the original shipping cost when the package returns to us.

Address Restrictions

For compliance reasons, we do not ship to:

  • P.O. boxes in certain jurisdictions where signature confirmation is required
  • Freight forwarders without verified business credentials
  • Addresses flagged for prior payment fraud or chargeback activity

If your order is held for a compliance review, we will email you to confirm the shipping address before dispatch.

For laboratory and research use only. All products sold by ZC Labs are intended exclusively for in-vitro laboratory and pre-clinical research. They are not intended for human or veterinary consumption, diagnosis, treatment, or any therapeutic application. Purchase confirms acknowledgment of our Research Use Only policy and Terms of Service.
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FDA Disclaimer

The statements made within this website have not been evaluated by the US Food and Drug Administration. The statements and the products of this company are not intended to diagnose, treat, cure or prevent any disease. All products are for laboratory developmental research USE ONLY. Products are not for human consumption.

ZC LABS is a chemical supplier. ZC LABS is not a compounding pharmacy or chemical compounding facility as defined under 503A of the Federal Food, Drug, and Cosmetic act. ZC LABS is not an outsourcing facility as defined under 503B of the Federal Food, Drug, and Cosmetic act.

THE PRODUCTS WE OFFER ARE NOT INTENDED FOR HUMAN USE. THEY ARE INTENDED FOR IN-VITRO AND PRE-CLINICAL RESEARCH PURPOSES ONLY. THE CUSTOMER ACKNOWLEDGES THAT THERE ARE RISKS IN THE HANDLING, USE, AND DISTRIBUTION OF THESE PRODUCTS, AND CERTIFIES THAT IT HAS THE PROPER EQUIPMENT, FACILITIES, AND PERSONNEL FOR MANAGING THOSE RISKS; AND THE CUSTOMER KNOWINGLY ACCEPTS THESE RISKS.