Certified Polysomnographic Technician (CPSGT) 2025 – 400 Free Practice Questions to Pass the Exam

The recommended maximum duration for a sleep study is typically overnight, allowing for a comprehensive assessment of the patient's sleep patterns and disorders. Tests are designed to capture multiple sleep cycles, which usually occur in an extended period, typically between 6 to 8 hours. This duration ensures that the various stages of sleep, including REM and non-REM sleep, can be adequately evaluated, offering a complete picture of the individual's sleep health.

A shorter duration, such as 3 to 5 hours or 2 to 4 hours, may not provide sufficient data to understand the complexity of sleep disorders. Overnight studies enable the monitoring of natural sleep behaviors, environmental influences, and physiological responses throughout the entire night, thus facilitating a more accurate diagnosis.