You may feel slight discomfort when the blood is drawn, but it is generally not painful.

What are the normal results for a Growth Hormone Test?

Normal levels vary by age and sex, and results are evaluated based on the time the hormone was measured.

What do abnormal results mean?

High levels may indicate excess growth hormone (e.g., gigantism), while low levels may indicate growth hormone deficiency.

How long does it take to get results?

Results usually take a few days to a week, depending on the laboratory.

Can external factors affect the results?

Yes, factors such as stress, exercise, and sleep can affect growth hormone levels.

Are there any side effects of the test?

Side effects are rare, but bruising or mild pain at the blood draw site may occur.

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Growth Hormone (GH) Test

Accurate measurement of growth hormone levels to evaluate pituitary function, support proper physical development, and maintain activity and vitality.

Trusted medical contentUpdated: 25-04-2026Views: 43LHL-67

About this service

The Growth Hormone (GH) test is used to measure levels of growth hormone in the blood. Growth hormone is responsible for regulating growth and development and is primarily produced by the pituitary gland. This test is performed to diagnose a range of disorders related to body growth, such as growth hormone deficiency, which can lead to short stature in children, or excessive hormone secretion, which may cause conditions like gigantism or acromegaly. This test is usually conducted in specific cases, such as children showing delayed growth or adults experiencing unexplained changes in weight or body composition. The test may require fasting or multiple measurements throughout the day to obtain accurate hormone level readings.

Purpose Test

Growth Hormone Deficiency: Determines if the body is not producing enough growth hormone, which may lead to short stature or delayed growth in children.
Excess Growth Hormone: Detects excessive secretion of growth hormone, which may result from pituitary tumors, potentially causing conditions like gigantism (excessive growth) or acromegaly (enlargement of extremities and facial features in adults).
Evaluation of Pituitary Function: Helps assess the health of the pituitary gland, which plays a central role in growth hormone production.
Assessment of Growth Disorders: Used to diagnose growth and developmental disorders in children and adolescents.

Recommended groups

Children with growth delays: If the child shows short stature or is unable to achieve normal growth compared to peers.
Adults showing symptoms of growth hormone deficiency: Such as loss of muscle mass, increased fat, severe fatigue, or reduced endurance.
Individuals with abnormal excessive growth: Such as enlargement of the extremities or face, which may indicate excessive growth hormone secretion.
People with pituitary tumors: To monitor growth hormone levels and evaluate treatment effectiveness.
Individuals with a family history of hormonal issues: For early detection of potential growth hormone-related disorders.
Athletes: In some cases, athletes may be tested to check for growth hormone use for performance enhancement.

Symptoms indicative

In children: Growth delay: Failure to achieve height appropriate for age peers. Short stature: Height significantly below the average for age and sex. Inability to gain weight: Not gaining weight normally during growth stages.
Growth delay: Failure to achieve height appropriate for age peers.
Short stature: Height significantly below the average for age and sex.
Inability to gain weight: Not gaining weight normally during growth stages.
In adults: Changes in body composition: Loss of muscle mass and increased fat, especially around the abdomen. Fatigue and tiredness: Persistent feeling of tiredness and inability to perform daily activities. Reduced energy and endurance: Difficulty in exercising or performing physical activities. Skin changes: Dry or sagging skin, or more wrinkles than usual.
Changes in body composition: Loss of muscle mass and increased fat, especially around the abdomen.
Fatigue and tiredness: Persistent feeling of tiredness and inability to perform daily activities.
Reduced energy and endurance: Difficulty in exercising or performing physical activities.
Skin changes: Dry or sagging skin, or more wrinkles than usual.
In cases of excessive growth hormone: Enlargement of extremities: Abnormal increase in hand and foot size. Facial changes: Prominent jaw or nose. Joint pain: Feeling discomfort or pain in the joints.
Enlargement of extremities: Abnormal increase in hand and foot size.
Facial changes: Prominent jaw or nose.
Joint pain: Feeling discomfort or pain in the joints.

Normal Levels

Children: Infants: 5 - 20 ng/mL School-aged children and adolescents: 10 - 30 ng/mL
Infants: 5 - 20 ng/mL
School-aged children and adolescents: 10 - 30 ng/mL
Adults: Men: 0 - 5 ng/mL (at rest) and may reach 10 - 15 ng/mL after exercise Women: 0 - 10 ng/mL (levels may be slightly higher during menstruation)
Men: 0 - 5 ng/mL (at rest) and may reach 10 - 15 ng/mL after exercise
Women: 0 - 10 ng/mL (levels may be slightly higher during menstruation)
Results should be interpreted by a specialist, as growth hormone levels can be affected by factors such as stress, sleep, and exercise.
Special cases, such as pituitary tumors, may require additional tests to confirm the diagnosis.
If results are abnormal, the doctor may request further tests or evaluations to determine the exact cause

Frequently Asked Questions

Short answers to the FAQs published with this service.

What is a Growth Hormone Test?

It is a test that measures growth hormone levels in the blood and is used to diagnose growth-related disorders.

Why is this test performed?

It is done to detect deficiency or excess of growth hormone, which can affect growth and overall health.

How is the test performed?

A blood sample is taken from a vein, and it may require fasting or multiple tests throughout the day.

Does the test require any special preparation?

Usually, fasting for 8 to 12 hours before the test is recommended, and the doctor should be informed about any medications you are taking.

Growth Hormone (GH) Test

About this service

Purpose Test

Recommended groups

Symptoms indicative

Normal Levels

What is included?

Conditions and notices

Frequently Asked Questions

References and additional resources

Scientific references

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