Minerva-based company launches fentanyl detection wipe for first responders

The handheld field tool is designed to help first responders quickly identify the presence of fentanyl

When the primary ingredient in the First Defense wipe comes in contact with fentanyl, it instantly changes color to indicate the presense of fentanyl.

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Published December 23, 2025 - 5:21 a.m.

Visual Detection Systems, an Ohio-based woman-owned company, announced the commercialization of its fentanyl detection wipe, First Defense, in 2025.

The handheld field tool is designed to help first responders quickly identify the presence of fentanyl. Company officials said the launch marks a major milestone in addressing opioid-related threats and reflects years of collaborative research, testing and development.

Field trials conducted in Ohio, North Carolina, Wisconsin and Massachusetts generated positive feedback from law enforcement agencies. Recent testing at the Peabody, Massachusetts, Police Department confirmed the product’s effectiveness, according to the company.

The First Defense wipe uses a one-step detection process that provides a rapid, presumptive visual indication of fentanyl, helping protect first responders, emergency medical personnel and health care workers from accidental exposure.

“Our mission is to protect those who protect us,” said Ann Hull of Minerva, owner of Visual Detection Systems. “This product is a direct result of cross-industry collaboration, scientific innovation and a commitment to public safety.”

Visual Detection Systems said it is an equal opportunity employer and serves as a hub for cross-disciplinary innovation. More information is available at firstdefensewipe.com or by contacting sales@firstdefensewipe.com.

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