ACTH Stimulation Test For Cortisol 3 samples Test in UAE

ACTH Stimulation Test for Cortisol (3 Samples) in Dubai and across the UAE to evaluate adrenal gland function and diagnose adrenal insufficiency (Addison’s disease). This dynamic test assesses how well your adrenal glands respond to synthetic ACTH (adrenocorticotropic hormone) by measuring cortisol levels at baseline, 30 minutes, and 60 minutes. A critical tool for confirming adrenal dysfunction. Results available within 4–6 days.

Overview

The ACTH Stimulation Test (Synacthen Test) is a gold-standard diagnostic procedure used to assess adrenal cortex function. It involves administering a synthetic form of ACTH (cosyntropin) and measuring cortisol levels in the blood at three time points: before injection (baseline), 30 minutes, and 60 minutes after. A healthy adrenal response shows a significant rise in cortisol. This test is essential for diagnosing primary or secondary adrenal insufficiency, especially in patients with fatigue, low blood pressure, or unexplained weight loss. Results are typically available within 4–6 business days.

Why You Need This Test

• Diagnose adrenal insufficiency (Addison’s disease) — a potentially life-threatening condition.
• Evaluate chronic fatigue, dizziness, or low blood pressure.
• Investigate hyponatremia (low sodium) or hyperpigmentation.
• Assess adrenal function in patients on long-term steroid therapy (e.g., prednisone).
• Monitor recovery after stopping corticosteroids.
• Rule out secondary adrenal failure due to pituitary disorders.
• Available at certified labs with trained staff across Dubai, Abu Dhabi, Sharjah, and all Emirates.

Symptoms & Risk Factors

Common Symptoms

• Severe fatigue and weakness not improved by rest
• Low blood pressure (may cause dizziness or fainting)
• Unintentional weight loss and poor appetite
• Nausea, vomiting, or abdominal pain
• Darkening of the skin (especially in elbows, knees, scars)
• Salt cravings due to sodium loss

Risk Factors

• Long-term use of corticosteroids (e.g., for asthma, arthritis)
• Autoimmune diseases (e.g., type 1 diabetes, thyroiditis)
• Pituitary tumors or brain injury
• Tuberculosis or other infections affecting the adrenal glands
• Cancer with adrenal involvement or metastasis
• Family history of autoimmune or endocrine disorders

How the Test Works

The ACTH Stimulation Test evaluates the adrenal glands’ ability to produce cortisol when stimulated. Here's the process:

• Step 1 — Baseline blood draw: first sample taken to measure resting cortisol.
• Step 2 — ACTH injection: synthetic ACTH (cosyntropin) is injected intramuscularly or intravenously.
• Step 3 — Follow-up draws: second sample at 30 minutes, third at 60 minutes post-injection.
• Step 4 — Lab analysis: cortisol levels are measured in all three samples.
• Step 5 — Results: interpreted by an endocrinologist; report ready in 4–6 days.

A normal response shows cortisol rising to >18–20 µg/dL at 30 or 60 minutes. A blunted rise indicates adrenal insufficiency.

Sample Type

• We take: Three blood samples (serum) over ~60 minutes
• Volume: 3 × 3–5 mL (red-top or serum separator tubes)
• Collection method: venipuncture (arm draw), with timed intervals
• Test duration: approximately 1 hour at the lab or hospital
• Storage: samples processed and centrifuged promptly
• Note: patient must remain seated/in-clinic during the entire test

Risks & Safety

• Minimal risk — standard blood draws and safe synthetic ACTH.
• Rare side effects: mild flushing, palpitations, or metallic taste after injection.
• Allergic reactions to cosyntropin are extremely rare.
• Safe for adults and children under medical supervision.
• No downtime — resume normal activities after completion.

Result Interpretation

Normal Response

• Baseline cortisol: 5–25 µg/dL (varies by time of day)
• Peak cortisol (30 or 60 min): ≥ 18–20 µg/dL
• Indicates healthy adrenal reserve and function.

Abnormal Results

• Primary Adrenal Insufficiency (Addison’s):
  • Low baseline cortisol
  • No significant rise after ACTH
  • High ACTH (if measured)
• Secondary Adrenal Insufficiency:
  • Low baseline cortisol
  • Poor response to ACTH
  • Low or normal ACTH

Indeterminate Results

• May require further testing (e.g., insulin tolerance test or morning ACTH).
• Repeat testing may be needed if on steroids or during acute illness.

Consequences if Untreated

• Adrenal crisis (Addisonian crisis) — a medical emergency with shock, vomiting, and coma.
• Severe hypotension leading to organ failure.
• Electrolyte imbalances: low sodium, high potassium.
• Chronic fatigue and disability affecting quality of life.
• Increased mortality risk without hormone replacement.

Factors Affecting Test Results

• Corticosteroid use: suppresses adrenal response — test only after adequate withdrawal (if safe).
• Recent illness or stress: may temporarily elevate cortisol.
• Time of day: cortisol is highest in the morning — test ideally done at 8–9 AM.
• Lab variability: different assays may have slightly different reference ranges.
• Partial adrenal dysfunction: may show intermediate response.
• Pregnancy: increases baseline cortisol (normal physiological rise).

FAQs

Limitations

• Requires in-person attendance for 60 minutes — not available for home collection.
• Cannot distinguish between primary and secondary insufficiency without ACTH level testing.
• May miss central (pituitary) causes if not combined with other evaluations.
• Suppressed by recent steroid use — timing is crucial.
• Not suitable during acute illness or adrenal crisis — use random cortisol instead.

Book Your ACTH Stimulation Test Today

Don’t ignore unexplained fatigue or low blood pressure — get a definitive answer on adrenal function.

• 3-Sample Cortisol Evaluation with Synthetic ACTH (Cosyntropin)
• Conducted at Certified Labs in Dubai, Abu Dhabi, Sharjah & All Emirates
• Results in 4–6 Days
• Price: AED 450
• ✅ Endocrinologist-Recommended | CLIA-Aligned Testing
• 💉 Safe & Standardized Procedure
• 🔒 Confidential Reporting