Cortisol is a hormone produced by the adrenal glands that plays a crucial role in regulating many functions of the body, including the sleep-wake cycle and your response to stress. The Bedtime Cortisol Test looks at cortisol levels at night to provide insight into how your body is managing stress throughout the day. High cortisol levels at night may reveal the reason why you have interrupted sleep or wake up tired with low energy each day. By understanding your bedtime cortisol levels, you can: Get to the root cause of fatigue, mood imbalances & more Address the underlying cause of stress & sleeplessness Rebalance the body to boost mood & regain energy Achieve restful & rejuvenating sleep Please be sure to collect and return your sample within 14 days of receipt of your lab test. All lab tests expire within 6 months of purchase EquiLife has temporarily suspended lab sales into the State of Washington through August 31, 2025