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Level 2 sleep study is a full polysomnography (similar like Level 1) but conducted at home without a technician present. It records almost all the same parameters as Level 1, including brain activity, making it a comprehensive home-based test.
Level 3 testing is a simplified sleep study done at home. It focuses on detecting all the sleep-related breathing disorders like Obstructive Sleep Apnea (OSA), but does not monitor brain waves, so sleep stages can’t be assessed.
It’s used for the patients:
It’s conducted for:
A technician may visit your home or you may be trained at a clinic on how to apply the sensors and operate the device.
The device records all the parameters through the night while you were sleeping normally at home.
The device is then returned to the clinic next day for data analysis. A sleep specialist interprets the report and makes treatment recommendations.
The test device is provided by a sleep clinic or technician, either in person or delivered to your home.
Start the device before you sleep. It collects data overnight while you sleep in your natural environment.
The next morning, you return the equipment as directed for report generation.
Level 2 is more comprehensive and suitable when a detailed diagnosis is needed. Level 3 is sufficient for straightforward cases of suspected OSA without other complications.
It’s accurate for detecting moderate to severe obstructive sleep apnea but may miss mild cases or other sleep disorders like central apnea or insomnia.
Yes, both tests are ordered by a sleep or pulmonology specialist after an initial consultation.
You may be advised to undergo a Level 1 in-lab polysomnography for more precise results.