hGH (growth hormone)

hGH (growth hormone) or somatotropin, is one of the key hormones in the human body that regulates growth and development. At IntroLab laboratory, we provide hGH analysis that can help identify and diagnose various health conditions.

What is hGH (growth hormone)?

Human growth hormone (hGH) is produced in the anterior part of the pituitary gland, a small pea-sized structure located at the base of the brain. hGH is a peptide hormone, meaning it is composed of amino acids. Specifically, its structure includes a chain of 191 amino acids. This specific configuration allows hGH to effectively communicate with receptors on cell membranes, initiating a series of biological processes that affect growth and metabolism.

Functions of hGH

hGH plays a crucial role in regulating body composition, cell growth, sugar and fat metabolism, as well as regulating heart functions. Acting on the liver, hGH stimulates the production of insulin-like growth factor (IGF-1). IGF-1, like hGH, plays a vital role during periods of rapid growth in childhood and adolescence.

Factors influencing hGH levels

hGH levels in the blood can be influenced by numerous factors, including:

• Diet
• Physical activity
• Sleep quality
• Stress levels
• Presence of diseases
• Age and gender

Why is hGH (growth hormone) analysis done?

Blood analysis of hGH is important for determining abnormalities in growth and development. The concentration of hGH in the blood is highest during childhood and adolescence and naturally decreases with age. This decline is a normal part of the aging process, but in some cases, excessive reduction in hGH levels can lead to symptoms associated with aging, such as loss of muscle mass, increased body fat, weakened bones, and reduced energy.

When is hGH (growth hormone) analysis recommended?

hGH analysis is recommended when there is suspicion of abnormal secretion of this hormone. Abnormally high or low hGH levels can lead to various health problems.

Abnormal hGH levels can cause various symptoms, including:

• Unexplained growth in children
• Weight gain
• Decrease in muscle mass
• Weakness
• Fatigue
• Emotional instability

Decreased hGH values

Decreased hGH values may indicate insufficient secretion of this hormone. This condition can be due to various factors, among which are:

• Damage to the hypothalamus: The hypothalamus is part of the brain that controls many hormonal functions in the body, including the secretion of growth hormone. Damage to this part of the brain can lead to decreased secretion of hGH.
• Increased concentration of somatostatin: Somatostatin is a hormone that inhibits the secretion of hGH. An increased concentration of somatostatin can lead to decreased secretion of hGH.
• Decreased concentration of growth hormone-releasing hormone (GHRH): GHRH is a hormone that stimulates the pituitary to secrete hGH. If its concentration is reduced, it can lead to decreased secretion of hGH.
• Pituitary tumors that destroy cells that secrete growth hormone: The pituitary produces hGH, and tumors in this organ can destroy cells that secrete hGH, leading to decreased secretion of this hormone.
• Damage to the pituitary due to trauma or infections: Such damage can affect the pituitary and its function, including the secretion of hGH.

When hGH is not secreted in sufficient quantities, it can lead to dwarfism or unachieved growth potential.

Increased hGH values

Increased growth hormone values, known as hGH, can be an indicator of excessive secretion of this hormone. This occurrence can be the result of various factors. When hGH secretion is excessive, it can lead to certain conditions:

• In children, it can cause gigantism, a condition characterized by excessive growth.
• In adults, excessive secretion of hGH can lead to acromegaly, also a condition characterized by excessive growth.

How are the results interpreted?

The interpretation of hGH (growth hormone) analysis results must be done carefully, considering the natural variability of this hormone. hGH levels can vary throughout the day, and are influenced by many factors such as diet, exercise, sleep, stress, and others. Therefore, one measurement may not necessarily be representative of the actual hGH level in the body.

Treatments for abnormal hGH levels

If hGH levels are abnormally high or low, there are various treatments that can help, including:

• Medications that reduce hGH production
• Hormone therapy to increase hGH levels
• Lifestyle changes, such as diet and exercise

It is always important to consult with healthcare professionals before starting any treatment. They will be able to provide you with the best advice and recommendations based on your individual health condition.