Growth Hormone - 1 Hour

The Growth Hormone (GH) – 1 Hour Lab Test from Lab Tests Dubai is a specialized blood test that measures growth hormone levels at a specific time—often used as part of a dynamic pituitary evaluation to assess abnormal GH secretion.

Produced by the anterior pituitary gland, growth hormone (GH) regulates:

• Growth in children and adolescents
• Muscle mass, fat metabolism, and bone density in adults
• Cellular repair and energy levels

While GH is released in pulses (especially during sleep), a single random or timed GH level—such as a 1-hour post-fasting or post-stimulation sample—can provide critical clues when interpreted with IGF-1 levels and clinical symptoms.

This test is essential for:

• Evaluating suspected acromegaly (excess GH in adults)
• Investigating growth failure in children
• Assessing adult growth hormone deficiency (AGHD)
• Monitoring pituitary tumors or dysfunction
• Supporting diagnosis after abnormal imaging (pituitary MRI)

Using high-sensitivity chemiluminescence technology, this serum-based test delivers accurate results within 2 days, helping endocrinologists diagnose complex hormonal disorders.

Available with home blood collection, Lab Tests Dubai ensures fast, accurate, and stress-free testing—so you can get answers without disruption to your care.

Why You Need This Test

If you’re experiencing unexplained growth issues, fatigue, or physical changes, this test could reveal a pituitary imbalance.

You need the GH – 1 Hour Test if:

• You have acromegaly symptoms: enlarged hands/feet, jaw protrusion, thick skin
• You’re a child with short stature or delayed growth
• You have pituitary disease (tumor, surgery, radiation)
• You’re being evaluated for hypopituitarism
• You have low IGF-1 levels on prior testing
• You’re undergoing GH stimulation or suppression testing (as part of a panel)

Note: A single GH level is not diagnostic—it must be paired with:

• IGF-1 (best screening test)
• Oral glucose suppression test (for acromegaly)
• Stimulation tests (e.g., insulin tolerance test) for deficiency

This test is often the first step in a larger pituitary workup.

Symptoms That Indicate This Test

Consider the GH Test if you experience:

• For Excess GH (Acromegaly):

• Enlarged hands and feet

• Coarsened facial features (protruding brow, enlarged nose)

• Joint pain or carpal tunnel syndrome

• Thick, oily skin

• Snoring or sleep apnea

• Headaches or vision changes (pituitary tumor)

• For GH Deficiency (Children):

• Slow growth or short stature

• Delayed puberty

• Fatigue, poor concentration

• Increased body fat

• For GH Deficiency (Adults):

• Low energy, depression

• Reduced muscle mass, increased abdominal fat

• Poor exercise tolerance

• Low bone density (osteoporosis)

• For Pituitary Issues:

• History of brain injury, tumor, or radiation

• Low testosterone, cortisol, or thyroid hormones

These signs may point to pituitary dysfunction—and this test helps initiate the diagnostic journey.

Natural Production: How Growth Hormone Regulates Body Function

GH is released by the anterior pituitary in pulses, primarily during deep sleep, exercise, and stress.

It works by:

• Stimulating the liver to produce IGF-1 (Insulin-like Growth Factor 1)
• Promoting protein synthesis, lipolysis, and insulin resistance

GH secretion declines with age—peaking in adolescence, dropping by ~14% per decade.

Normal Random GH Levels

IGF-1 is the preferred screening test because it:

• Reflects average GH exposure over days
• Is stable throughout the day

Elevated GH + IGF-1 → Acromegaly (usually due to pituitary adenoma)
Low IGF-1 + symptoms → GH deficiency (pituitary or hypothalamic)

This test is often paired with IGF-1, prolactin, and pituitary MRI.

What Happens If Untreated? Risks of Ignoring GH Imbalance

Ignoring abnormal GH levels can lead to:

• Acromegaly Complications – heart disease, diabetes, arthritis, sleep apnea
• Untreated Pituitary Tumors – vision loss, hormone failure
• Growth Failure in Children – psychosocial impact, short stature
• Metabolic & Cardiovascular Risk – from long-term GH excess or deficiency

The good news? Most cases are treatable with:

• Surgery (transsphenoidal resection of pituitary tumor)
• Medications (somatostatin analogs, GH receptor antagonists)
• GH replacement (for deficiency, under strict supervision)

Early testing = better outcomes and quality of life.

How to Prepare for the Test

To ensure accurate results:

• Fast for 8–12 hours (overnight fast) – especially if part of a suppression test

• Avoid exercise, stress, or sleep deprivation the night before

• Inform your doctor of:

• Pituitary or hormone medications

• History of diabetes or seizures

• Recent illness or surgery

  • For dynamic testing (e.g., glucose suppression), follow strict timing instructions

A serum blood sample is collected via standard draw—available at our labs or via home collection.

Test Overview: High-Sensitivity Chemiluminescence Method

Important Notes

• Random GH alone is not diagnostic due to pulsatile secretion
• Always interpret with IGF-1 levels
• For deficiency: Stimulation tests (ITT, GHRH+arginine) are diagnostic

Results are reported with clinical notes for your endocrinologist.

Benefits of the Growth Hormone Blood Test

• Early Detection of Acromegaly

Catch pituitary tumors before they cause irreversible changes.

• Growth Assessment in Children

Identify causes of short stature and guide treatment.

• Metabolic & Energy Insight

Understand fatigue, weight gain, and low muscle mass.

• Pituitary Health Monitoring

Track recovery after surgery or radiation.

• Support for IGF-1 Abnormalities

Confirm or rule out GH imbalance.

If you’re tired of unexplained fatigue, growth issues, or physical changes, the Growth Hormone (GH) – 1 Hour Test gives you the answers you need in just 2 days.