AVALON: Another large real-world study comparing ambulatory cardiac monitoring services

Click here to see the study

Reimagining What a Monitoring Service Can Do

The Zio® service is an ambulatory cardiac monitoring solution with highly accurate data, designed with patients in mind.1,2

A Few Easy Steps

The Zio AT® Service


View instructional information about the Zio AT service below.

Applying your Zio AT monitor

Wearing your Zio AT monitor and using the gateway

Instructions for Use

Download instructional information about the Zio AT service below.

MyZio app screenshot

Log Symptoms on Your Phone

The MyZio® mobile app allows you to easily log symptoms, receive helpful reminders, and get answers to common questions directly on your phone.

Download the app today on iOS or Android.

Zio monitor box

Zio AT Monitor Support

Answers to common questions.


Contact Us

We're Here for You

For questions about applying, wearing, removing & returning a Zio AT device, etc.

 Call us 24/7 at 1‑(888)‑693‑2401

Or submit a request through our contact us page.


If at any time you feel the need for immediate medical care, please call 911.

The Zio AT monitor will not provide any medical assistance and cannot contact medical personnel for you.

1. Data on file. iRhythm Technologies, 2023.

2. Zio AT Clinical Reference Manual. iRhythm Technologies. Zio ECG monitors are designed with the patients in mind and no maintenance or battery changes are required.

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