Cortisol
Cortisol is a steroid hormone produced by the adrenal glands that plays a crucial role in metabolism, immune function, blood pressure regulation, and the body's stress response. The Cortisol Test evaluates cortisol levels in the blood, helping diagnose adrenal disorders, chronic stress, and hormonal imbalances. This test is commonly used to detect conditions like Cushing’s syndrome (excess cortisol), Addison’s disease (low cortisol), and adrenal fatigue, as well as to assess how the body responds to stress.
Test details
Sample type
Blood
Time of day
Samples should be collected between 7-9 am
Fasting required
No
Results timeframe
Within 7 days
Preparation
No special preparation required
What's measured in this test
Cortisol
Measures stress hormone affecting energy, mood.
Common reasons for testing
- Chronic Fatigue or Low Energy – Identifies whether adrenal dysfunction is causing persistent exhaustion.
- Suspected Cushing’s Syndrome – Evaluates excess cortisol levels, which can lead to weight gain, high blood pressure, and muscle weakness.
- Suspected Addison’s Disease – Detects low cortisol levels, which may cause fatigue, low blood pressure, and unexplained weight loss.
- Unexplained Anxiety or Mood Changes – Assesses cortisol’s role in stress, anxiety, and depression.
- Blood Sugar and Blood Pressure Issues – Cortisol plays a role in glucose metabolism and maintaining normal blood pressure.
- Monitoring Hormonal or Adrenal Disorders – Helps track adrenal function in individuals undergoing hormone therapy or stress management.