Cortisol

About This Test
Cortisol is the body’s main stress hormone with a strong morning peak. Testing helps assess adrenal function in fatigue, weight changes, or suspected Cushing’s or Addison’s disease.

Patient Preparation
Fasting not required.

Best Time to Test
Morning preferred, early after waking up.

Tests Included
Cortisol

Why is it done
Fatigue, weight or mood changes, or menstrual/sexual symptoms.
Suspected adrenal, pituitary, or gonadal disorders.
Monitoring hormone therapy or endocrine treatments.
Clarifying abnormal results from prior tests.
Often included in routine check‑ups to find issues early.