What is being analysed?
Growth hormone (GH), also known as somatotropin, is a vital hormone produced by the pituitary gland. GH plays a crucial role in stimulating growth, cell reproduction, and regeneration.
What does the result mean?
The analysis of GH levels provides insights into an individual's growth patterns, metabolism, and overall health. Abnormal GH levels can indicate various medical conditions, such as growth hormone deficiency or excess.
Why perform the analysis?
GH analysis is performed to diagnose growth disorders, monitor the effectiveness of GH therapy, assess pituitary gland function, and evaluate conditions like acromegaly or gigantism.
When should the analysis be done?
GH analysis is typically conducted when there are signs of growth abnormalities, delayed growth in children, symptoms of GH deficiency or excess, or suspected pituitary gland disorders.
What sample is required?
A blood sample is required for GH analysis. It is usually drawn from a vein in the arm using a needle.
Is any prior preparation necessary?
Prior to the test, patients may be instructed to fast for a certain period to ensure accurate results. Additionally, certain medications or supplements that can affect GH levels may need to be discontinued temporarily.
What are the normal values?
Normal GH levels vary depending on age, sex, and other factors. In adults, normal GH levels typically range from 0.4 to 10 nanograms per millilitre (ng/mL) while in children, it varies based on developmental stage.
GH analysis reference table:
|
Age Group |
Normal GH Levels (ng/mL) |
|---|---|
|
Infants |
10-50 |
|
Children |
0.2-10 |
|
Adolescents |
0.2-10 |
|
Adults |
0.4-10 |
Note: Reference ranges may vary slightly between different laboratories. It's important to interpret results in the context of age, sex, and individual health status. Any abnormal results should be discussed with a healthcare provider for further evaluation and management.
What does having altered values mean?
- Low GH levels: Low GH levels may indicate growth hormone deficiency (GHD) in children or adults, pituitary gland disorders, chronic illnesses, or malnutrition. Symptoms may include stunted growth, decreased muscle mass, and increased body fat.
- High GH levels: Elevated GH levels may suggest conditions such as acromegaly, gigantism, pituitary tumours, or certain genetic disorders. Symptoms may include excessive growth, enlarged features, joint pain, and organ enlargement.