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Q&A · Hunting

Is CWD Testing Mandatory for All Deer Harvested in My State?

April 5, 2026

Quick Answer

CWD testing is mandatory for harvested deer in some states, while others have voluntary testing or specific requirements for certain areas or populations. Regulations vary by state, so it's essential to check with your local wildlife agency for specific requirements. If you plan to hunt in a state with mandatory testing, be prepared to participate.

Understanding CWD Testing Requirements

To determine if CWD testing is mandatory in your state, visit your local wildlife agency’s website or contact them directly. In the United States, for example, the Centers for Disease Control and Prevention (CDC) has identified 27 states with CWD cases. Among these states, some have implemented mandatory testing for harvested deer, while others have voluntary testing programs.

Mandatory Testing States and Regulations

Some mandatory testing states include Wisconsin, Illinois, and Michigan, which require CWD testing for harvested deer in specific areas or throughout the state. In Wisconsin, for instance, archery deer hunters are required to submit white-tailed deer for CWD testing from certain counties, while firearm deer hunters are exempt from testing. It’s essential to familiarize yourself with your state’s specific regulations and testing requirements before hunting.

Techniques for CWD Testing

When submitting deer for CWD testing, follow the guidelines set by your state wildlife agency. Typically, this involves collecting a brain stem sample from the deer, which is then sent to a laboratory for analysis. Some states, like Wisconsin, use a voluntary reporting system, where hunters can submit additional samples for CWD testing. If you’re unsure about the CWD testing process or requirements in your state, consult with a local wildlife biologist or hunting expert for guidance.

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