ACTH Stimulation Test (Short Synacthen Test)4,100.00 at Chughtai Lab

ACTH Stimulation Test (Short Synacthen Test)4,100.00 at Chughtai Lab

The ACTH Stimulation Test (Short Synacthen Test)4,100.00 is a highly specialized endocrine dynamic function test designed to evaluate the functional capacity of the adrenal glands. Specifically, it assesses the ability of the adrenal cortex to synthesize and secrete cortisol in response to stimulation by adrenocorticotropic hormone (ACTH). Cortisol, a vital glucocorticoid hormone produced by the adrenal glands, plays a fundamental role in regulating metabolism, maintaining blood pressure, modulating the immune system, and managing the body’s physiological response to stress. Under normal physiological conditions, the hypothalamus releases corticotropin-releasing hormone (CRH), which prompts the anterior pituitary gland to secrete ACTH. ACTH then travels through the bloodstream to stimulate the adrenal cortex to release cortisol. This intricate feedback loop is known as the hypothalamic-pituitary-adrenal (HPA) axis.

At Chughtai Lab, Pakistan’s leading diagnostic network, the ACTH Stimulation Test (Short Synacthen Test)4,100.00 is performed with the highest level of clinical precision. The test utilizes a synthetic analogue of ACTH, commonly known as Synacthen or tetracosactide, to mimic the natural signaling process. By administering a standardized dose of this synthetic hormone and measuring the subsequent rise in serum cortisol levels at specific intervals, endocrinologists and clinical pathologists can definitively evaluate adrenal reserve. This dynamic investigation is far superior to a single, random baseline cortisol measurement, as cortisol levels naturally fluctuate throughout the day due to diurnal variation and can be influenced by acute stress, sleep patterns, and illness. The ACTH Stimulation Test (Short Synacthen Test)4,100.00 provides a clear, stimulated peak value that serves as the gold standard for diagnosing primary adrenal insufficiency (Addison’s disease) and assists in the diagnostic workup of secondary adrenal insufficiency.

Clinical Procedure: What to Expect

Patient Preparation

Proper patient preparation is critical to ensure the clinical accuracy of the ACTH Stimulation Test (Short Synacthen Test)4,100.00. Patients must strictly adhere to the following guidelines prior to undergoing the procedure at Chughtai Lab:

• Timing of the Test: The test is almost always scheduled early in the morning, typically between 8:00 AM and 9:00 AM. This timing aligns with the natural physiological peak of cortisol secretion and provides the most reliable baseline measurements.
• Medication Management: Certain medications can interfere with cortisol assays or suppress the HPA axis. Patients must inform their prescribing physician and the laboratory staff of all medications they are taking. Glucocorticoid medications (such as hydrocortisone, prednisolone, or dexamethasone) must generally be held for 12 to 24 hours prior to the test, under strict medical supervision. Inhaled, topical, or nasal steroids may also need to be disclosed.
• Estrogen-Containing Therapies: Oral contraceptive pills or hormone replacement therapies containing estrogen can artificially elevate cortisol-binding globulin (CBG) levels, leading to falsely high total cortisol measurements. A medical specialist may advise discontinuing these therapies several weeks before the test.
• Fasting Requirements: While strict fasting is not always mandatory, patients are generally advised to avoid eating or drinking anything other than water for at least 8 hours before the test to minimize metabolic interference.
• Stress and Physical Activity: Physical exertion, acute illness, and emotional stress can naturally elevate cortisol levels. Patients should rest quietly before the test and avoid strenuous exercise for 24 hours prior to sample collection.

During the Procedure

The ACTH Stimulation Test (Short Synacthen Test)4,100.00 is a multi-step dynamic investigation that requires close monitoring by trained laboratory professionals at Chughtai Lab. The procedure follows a standardized clinical protocol:

• Intravenous Access: A qualified phlebotomist or nurse will insert an intravenous (IV) cannula into a vein in the patient’s arm. This cannula remains in place throughout the test to allow for multiple blood draws without the need for repeated needle punctures, thereby reducing patient stress and discomfort.
• Baseline Blood Draw (Time 0): A baseline blood sample is collected to measure the resting levels of serum cortisol and, in some clinical scenarios, baseline plasma ACTH.
• Administration of Synacthen: Immediately after the baseline blood draw, a standardized dose of synthetic ACTH (typically 250 micrograms of Synacthen) is administered either intravenously (IV) or intramuscularly (IM).
• Resting Period: The patient is asked to remain seated or lying down comfortably during the stimulation period. It is essential to remain calm and relaxed to avoid endogenous stress-induced cortisol release.
• Post-Stimulation Blood Draws: Subsequent blood samples are collected at precise intervals, most commonly at 30 minutes and 60 minutes following the Synacthen injection. These intervals capture the peak adrenal response.
• Safety and Tolerability: The procedure is highly safe and well-tolerated. Some patients may experience minor, transient side effects such as facial flushing, mild nausea, or a warm sensation immediately after the injection, which typically resolve within a few minutes. The entire procedure takes approximately one to one and a half hours to complete.

When is a ACTH Stimulation Test (Short Synacthen Test)4,100.00 Performed?

Suspected Primary Adrenal Insufficiency (Addison’s Disease)

Physicians request this test when a patient exhibits signs and symptoms of primary adrenal insufficiency, a condition where the adrenal glands themselves are damaged or destroyed, often due to autoimmune adrenalitis, tuberculosis, or systemic infections. Common symptoms include chronic, unexplained fatigue, muscle weakness, loss of appetite, unintentional weight loss, low blood pressure (hypotension), and hyperpigmentation of the skin and mucous membranes. The ACTH Stimulation Test (Short Synacthen Test)4,100.00 is the definitive diagnostic tool to confirm whether the adrenal cortex is capable of producing cortisol when stimulated.

Investigation of Secondary Adrenal Insufficiency

Secondary adrenal insufficiency occurs when the pituitary gland fails to produce adequate amounts of ACTH, leading to a lack of stimulation and subsequent atrophy of the adrenal cortex. This can result from pituitary tumors, head trauma, pituitary surgery, radiation therapy, or Sheehan’s syndrome. Patients may present with fatigue, weight loss, hypoglycemia, and pale skin (unlike the hyperpigmentation seen in primary insufficiency). The test helps clinicians determine the degree of adrenal responsiveness and evaluate the integrity of the pituitary-adrenal pathway.

Assessment of HPA Axis Recovery Post-Steroid Therapy

Prolonged use of exogenous glucocorticoid medications (such as prednisone or dexamethasone) for inflammatory, autoimmune, or oncological conditions suppresses the body’s natural production of CRH and ACTH, leading to adrenal suppression and atrophy. When tapering or discontinuing long-term steroid therapy, physicians perform the ACTH Stimulation Test (Short Synacthen Test)4,100.00 to assess whether the patient’s adrenal glands have recovered sufficiently to produce adequate cortisol during physiological stress, thereby preventing an adrenal crisis.

Evaluation of Unexplained Hypotension and Electrolyte Imbalances

Hyponatremia (low blood sodium) and hyperkalemia (high blood potassium) are classic electrolyte disturbances associated with mineralocorticoid and glucocorticoid deficiencies. When these biochemical abnormalities are accompanied by persistent, unexplained hypotension that does not respond to fluid resuscitation, clinicians utilize this test to rapidly rule out or confirm acute or chronic adrenal insufficiency, ensuring prompt and life-saving hormone replacement therapy can be initiated.

Diagnostic Workup for Congenital Adrenal Hyperplasia (CAH)

In cases of suspected late-onset or non-classic Congenital Adrenal Hyperplasia, an inherited enzymatic defect in cortisol synthesis (most commonly 21-hydroxylase deficiency) is present. Patients, particularly young women, may present with hirsutism, oligomenorrhea, severe acne, or virilization. The ACTH Stimulation Test (Short Synacthen Test)4,100.00 is performed not only to measure cortisol response but also to evaluate the accumulation of precursor hormones, such as 17-hydroxyprogesterone (17-OHP), which rise dramatically following ACTH stimulation in affected individuals.

What Does a ACTH Stimulation Test (Short Synacthen Test)4,100.00 Detect?

The ACTH Stimulation Test (Short Synacthen Test)4,100.00 is highly sensitive and can detect a wide range of endocrine disorders, adrenal pathologies, and functional abnormalities of the HPA axis. Specifically, the test can identify:

• Normal Adrenal Reserve: A robust, healthy increase in serum cortisol levels post-stimulation, ruling out primary adrenal insufficiency.
• Primary Adrenal Insufficiency (Addison’s Disease): Characterized by low baseline cortisol and a flat or subnormal response to Synacthen stimulation.
• Secondary Adrenal Insufficiency: Indicated by a subnormal cortisol response due to chronic lack of pituitary ACTH stimulation, leading to adrenal atrophy.
• Tertiary Adrenal Insufficiency: Resulting from hypothalamic dysfunction or chronic suppression, leading to impaired adrenal response.
• Exogenous Steroid-Induced Adrenal Suppression: Detection of suppressed adrenal function following prolonged glucocorticoid administration.
• Non-Classic Congenital Adrenal Hyperplasia (NCCAH): Identified by an exaggerated rise in 17-hydroxyprogesterone levels post-stimulation.
• Autoimmune Adrenalitis: The leading cause of primary adrenal insufficiency, detected through impaired cortisol response.
• Infectious Adrenalitis: Adrenal destruction caused by tuberculosis, cytomegalovirus (CMV), or fungal infections.
• Bilateral Adrenal Hemorrhage: Acute adrenal failure, often associated with sepsis or anticoagulant therapy, showing zero response to stimulation.
• Adrenal Metastasis: Destruction of the adrenal cortex by metastatic cancer cells (e.g., lung or breast cancer), leading to primary insufficiency.
• Pituitary Macroadenoma Impact: Secondary adrenal insufficiency caused by tumor compression on normal pituitary tissue.
• Sheehan’s Syndrome: Postpartum pituitary necrosis leading to panhypopituitarism and secondary adrenal failure.
• Lymphocytic Hypophysitis: Autoimmune inflammation of the pituitary gland affecting ACTH secretion.
• Adrenalectomy Status: Evaluation of remaining adrenal function following unilateral adrenalectomy for tumors.
• Partial ACTH Resistance: Rare genetic syndromes where the adrenal receptors have reduced sensitivity to ACTH.
• Allgrove Syndrome (Triple A Syndrome): A genetic disorder characterized by achalasia, alacrima, and ACTH-resistant adrenal insufficiency.
• Etomidate-Induced Adrenal Suppression: Transient suppression of adrenal steroidogenesis following anesthetic administration.
• Ketoconazole-Induced Enzyme Inhibition: Impaired cortisol synthesis due to antifungal medication blocking key adrenal enzymes.
• Mitotane-Induced Adrenocortical Suppression: Reduced adrenal response in patients treated for adrenocortical carcinoma.
• HPA Axis Recovery: Confirmation of normal adrenal responsiveness after successful tapering of long-term steroid therapy.

Turnaround Time and Report Access at Chughtai Lab

Chughtai Lab is committed to providing accurate and timely diagnostic insights. Because the ACTH Stimulation Test (Short Synacthen Test)4,100.00 involves multiple serum samples collected at specific timepoints, the laboratory processes these specimens using advanced, automated chemiluminescent immunoassay (CLIA) technology. This ensures the highest level of analytical sensitivity and specificity for cortisol measurement.

The turnaround time for the ACTH Stimulation Test (Short Synacthen Test)4,100.00 is typically within 24 to 48 hours from the completion of sample collection. Once the clinical pathologist reviews and signs off on the results, patients receive an automated SMS notification. Reports can be accessed instantly online through the official Chughtai Lab patient portal, via the Chughtai Lab mobile application, or through their dedicated WhatsApp service. Physical copies of the report can also be collected from any Chughtai Lab collection center across Pakistan, including major hubs in Lahore, Karachi, Islamabad, and Peshawar.

ACTH Stimulation Test (Short Synacthen Test)4,100.00 Findings Overview

The interpretation of the ACTH Stimulation Test (Short Synacthen Test)4,100.00 requires a comprehensive evaluation of baseline and stimulated cortisol levels. The table below outlines the typical parameters evaluated during this dynamic investigation:

Parameter / Timepoint	Normal Findings	Possible Abnormal Findings
Baseline Cortisol (Time 0)	5 to 25 mcg/dL (highly variable depending on stress and diurnal rhythm)	< 3 mcg/dL (highly suggestive of adrenal insufficiency); > 25 mcg/dL (stress-induced or Cushingoid state)
30-Minute Cortisol	Significant rise from baseline, typically > 18 mcg/dL	Blunted response, failing to reach the diagnostic threshold of 18 mcg/dL
60-Minute Cortisol	Peak response, typically > 18 to 20 mcg/dL	Flat response, indicating primary or severe secondary adrenal insufficiency
Cortisol Increment (Delta Cortisol)	An absolute increase of > 7 to 10 mcg/dL from the baseline value	Minimal or no increment, indicating adrenal exhaustion or atrophy
Baseline ACTH (Co-ordered)	10 to 60 pg/mL (normal reference range)	> 100 pg/mL (Primary Adrenal Insufficiency); low or undetectable (Secondary Adrenal Insufficiency)
17-OH Progesterone (CAH Workup)	Minimal rise post-stimulation (< 200 ng/dL)	Exaggerated rise (> 1000 ng/dL), diagnostic of late-onset Congenital Adrenal Hyperplasia
Aldosterone (Optional)	Significant increase from baseline	Blunted or absent response, confirming mineralocorticoid deficiency in primary adrenal failure

Note: Diagnostic findings should always be interpreted by a qualified healthcare professional together with the patient’s symptoms, medical history, physical examination, laboratory investigations, previous imaging studies, and other relevant clinical information. Additional investigations or specialist consultation may be recommended depending on the findings.

Why Choose Chughtai Lab for ACTH Stimulation Test (Short Synacthen Test)4,100.00?

• Experienced Healthcare Professionals: Our team of highly qualified endocrinologists, clinical pathologists, and specialized technologists supervise every step of your dynamic endocrine testing.
• Patient-Focused Care: We prioritize patient comfort and safety, providing dedicated, stress-free environments for multi-sample dynamic procedures.
• Quality Diagnostic Services: Chughtai Lab adheres to stringent international quality standards and participates in rigorous external quality assurance programs.
• Professional Reporting: Our reports provide clear, structured documentation of all timepoints, baseline values, and stimulated cortisol levels for easy clinical interpretation.
• Modern Diagnostic Approach: We utilize state-of-the-art chemiluminescent immunoassay (CLIA) technology to ensure maximum precision and accuracy in hormone assays.
• Comfortable Environment: Our modern diagnostic centers across Pakistan are designed to offer a welcoming, clean, and professional experience.
• Convenient Location: With a vast network of collection centers in Lahore, Karachi, Islamabad, and other major cities, accessing our services is highly convenient.
• Commitment to Accurate Diagnosis: We understand the critical nature of endocrine testing and are dedicated to delivering reliable, timely results to guide your treatment.