Cash for clean tests: App-Based rewards aim to curb opioid and cocaine use
NCT ID NCT04927143
First seen Nov 01, 2025 · Last updated Jun 23, 2026 · Updated 30 times
Summary
This study tests whether giving financial incentives for negative drug tests can help people with opioid, cocaine, or methamphetamine use disorder stay abstinent. Six hundred participants use a smartphone app to submit saliva tests. Some receive escalating or de-escalating rewards for clean tests, while a control group gets no rewards. The goal is to find the best way to design these incentives to encourage long-term abstinence.
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This is a summary of
the original study
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Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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Contacts and locations
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Study contacts
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Contact
Phone: •••-•••-•••• Email: •••••@•••••
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Contact
Phone: •••-•••-•••• Email: •••••@•••••
Locations
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Advocate Aurora Behavioral Health Services
RECRUITINGWauwatosa, Wisconsin, 53212, United States
Contact Phone: •••-•••-•••• Email: •••••@•••••
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Rogers Behavioral Health
RECRUITINGOconomowoc, Wisconsin, 53066, United States
Contact
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
Active substance
financial incentives via smartphone app
What this could lead to
If successful, this could provide a low-cost, scalable way to help people with substance use disorders achieve and maintain abstinence.
What could go wrong
This is a behavioral study, not a drug trial. The effect may be modest, and long-term abstinence after incentives stop is uncertain.
Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.