🔬 What is the Test?
The ACTH (Adrenocorticotropic Hormone) test measures the level of ACTH in the blood. ACTH is produced by the pituitary gland and stimulates the adrenal glands to release cortisol, a hormone vital for metabolism, immune response, and stress management.
📊 Normal Ranges:
Morning (8 AM): 10 – 60 pg/mL
Evening (4 PM or later): <20 pg/mL
(Values may vary based on laboratory standards.)
🎯 Purpose of the Test:
✅ Diagnoses adrenal and pituitary disorders (e.g., Cushing’s disease, Addison’s disease)
✅ Evaluates excessive or deficient cortisol production
✅ Helps determine the cause of hormonal imbalances
✅ Monitors adrenal function in people with known conditions
🩺 When is it Recommended?
🔹 Unexplained weight gain or loss
🔹 Fatigue, muscle weakness, or high blood pressure
🔹 Suspected adrenal insufficiency (Addison’s disease)
🔹 Suspected excess cortisol production (Cushing’s syndrome)
🔹 For patients undergoing adrenal or pituitary gland evaluations
📝 How is the Test Done?
1️⃣ Blood Sample Collection – Typically done in the morning when ACTH levels are highest.
2️⃣ Laboratory Analysis – Measures ACTH levels in the blood.
3️⃣ Result Interpretation – Compared with cortisol levels for accurate diagnosis.
⚠️ What Do Abnormal Results Mean?
📉 Low ACTH:
Cushing’s syndrome (excess cortisol production)
Adrenal tumors or long-term steroid use
📈 High ACTH:
Addison’s disease (adrenal insufficiency)
Cushing’s disease (pituitary tumor overproducing ACTH)
Ectopic ACTH production (caused by certain lung cancers or tumors)
📌 Infographic Design Idea:
✔ Medical color scheme (blue, orange, and white)
✔ Illustration of the pituitary-adrenal axis
✔ Flowchart explaining ACTH regulation and its role in cortisol production
✔ Table summarizing normal vs. abnormal ACTH levels and related conditions