Could a ring on your finger detect sleep apnea?
NCT ID NCT04121923
First seen May 30, 2026 · Last updated Jun 23, 2026 · Updated 3 times
Summary
This study tested a wearable ring called the Belun Ring Pulse Oximeter to see if it can accurately screen for obstructive sleep apnea. Seventy adults wore the ring during a standard overnight sleep lab test. The ring measures oxygen levels, heart rate, and movement. Researchers compared the ring's readings to the lab's results to check its accuracy.
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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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Locations
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Mountain Sleep Diagnostics
Denver, Colorado, 80231, United States
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
Active substance
Belun Ring Pulse Oximeter (wearable device)
What this could lead to
If successful, this device could offer a simpler, at-home way to screen for sleep apnea, potentially reducing the need for overnight lab stays.
What could go wrong
This is a small, completed validation study (70 people). The device may not be as accurate in real-world settings or in people with other health conditions.
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.