As of August 29, 2025 U.S. customs changes now require additional steps when returning small parcels under $800. We’ve created this guide to hopefully make the process easier using our provided envelope.

Good news: If done properly, there are no customs duties to pay.

Please read all sections carefully, some instructions apply only to specific test types.

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1. ALPHA TRACKS:

Option A : Using Canada Post

You must follow the dedicated Zonos step-by-step guide and watch the short video provided below.

Option B (Alpha Tracks Only) : Other courier (FedEx, UPS, etc.)

If you do not use Canada Post, you must provide the courier the same customs instructions as seen in Section 3 that is used for Short-Term and Water Tests. However, the delivery requirement is different. Your device must arrive at the lab within 30 days of the test end date and before the expiry date.

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2. Short-Term & Water Tests:

DO NOT return using Canada Post to to possible late delivery.

The test must arrive at the lab within 7 days calendar days, Monday–Friday delivery only.

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3. Shipping for Short Term & Water Tests (UPS, FedEx, Purolator, ICS, etc.)

The courier’s customs declaration must include the following exact information:

Contents: Radon Test Kit – Return for Analysis

Country of Origin: Made in the USA

Value: provide the courier the value

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ZONOS INSTRUCTIONS FOR RETURNING ALPHA TRACKS USING CANADA POST:

If any of these items are missing or incorrect, U.S. Customs may charge fees or prevent delivery to the lab.

Step-by-Step Guide for Canada Post - 🎥 [Watch Video]

Step 1. Download the Zonos Prepay App

• For iPhone users: Open the App Store and search for Zonos Prepay.
• For Android users: Open Google Play and search for Zonos Prepay.

Step 2. Create Your Free Account

• Open the app and sign up using your name and email address by clicking on ACCOUNT in the bottom right corner.

Step 3. Start a New Shipment

1. At the bottom, tap Ship.
2. Select Is a Standard Package, then tap Continue.

Step 4. Add the Item Details.

The comments in this example for a long term test kit also applies to short term and radon in water tests. Please adjust the $ value accordingly.

1. On the next page, tap Add Items Manually.
2. Under Item Description, type:
   RADON TEST KIT, RETURN FOR ANALYSIS
3. Under Country of Origin, select United States.
4. Under Value, enter the amount. This example is for the return of 1 unit.
5. Tap Add Item at the bottom.

Step 5. Review and Complete

• You’ll see an overview showing $0.00 owing.
• Tap Complete.

Step 6. Get Your Declaration ID & QR Code

• The app will generate a 13-character Declaration ID and a QR code.
• Canada Post will need either the Declaration ID or the QR code to process your package.

Saving the QR Code:

• iPhone: Tap Share → Save to Photos.
• Android: Tap Share → Save Image (or “Download” on some devices).

Tip: If those options don’t appear, simply take a screenshot of the QR code.

You can show the QR code on your phone or provide the Declaration ID to the Canada Post clerk when you ship your kit.