Growth hormone (GH) tests are blood tests that check if your body is making a normal amount of GH. Hormones are chemical messengers in your bloodstream that control the actions of certain cells or organs. GH, also known as human growth hormone, controls your body's growth. It also helps control metabolism, the process your body uses to make energy from the food you eat. GH is made in the pituitary gland, a small organ at the base of your brain that controls many functions, including growth.
In children, GH plays a major role in bone growth, muscle mass development, and height. In adults, GH affects bone and muscle health. If you or your child have too much or too little GH, it can cause health problems.
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GH tests are used to detect and monitor GH disorders, including:
GH deficiency - In children, GH is essential for normal growth and development. A GH deficiency can cause a child to grow more slowly and be much shorter than children of the same age and sex. In adults, GH deficiency can lead to low bone density and reduced muscle mass.
Gigantism- This rare childhood disorder causes your body to produce excess (too much) GH. Children with gigantism are very tall for their age and have large hands and feet.
Acromegaly- This condition affects adults and causes your body to produce too much growth hormone. Adults with acromegaly have thicker than normal bones and enlarged hands, feet, and facial features.
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In general, the normal range for HGH levels include:
For adult males: 0.4 to 10 nanograms per milliliter (ng/mL) or 18 to 44 picomoles per liter (pmol/L)
For adult females: 1 to 14 ng/mL, or 44 to 616 pmol/L.2
For children: 10 to 50 ng/mL, or 440 to 2200 pmol/L
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What does the Growth Hormone Test Measure ?
Growth hormone (GH) tests are blood tests that check if your body is making a normal amount of GH. Hormones are chemical messengers in your bloodstream that control the actions of certain cells or organs.
Why should I do the Growth Hormone Test ?
Your doctor may order a GH test if you or your child has symptoms of a GH disorder or to monitor treatment for a GH disorder.
Symptoms of GH deficiency in children include:
Slowed growth rate compared with children of the same age and sex
Shorter height, arms, and legs, and lower weight than children of the same age and sex
Small penis in males
Delayed puberty
Symptoms of GH excess (gigantism) in children include:
Excessive growth compared with children of the same age and sex
Overly large head
Larger than normal hands and feet
Mild to moderate obesity
Symptoms of GH excess (acromegaly) in adults include:
Deep, husky voice
Larger than normal facial features such as lips, nose, and tongue
Excessive sweating and body odor
Thickening of bones
Coarse, oily skin
regular menstrual cycles in women
How is the Growth Hormone Test Done ?
The Growth Hormone test is a blood test and needs fasting before the test. The blood sample can be taken by the phlebotomist at a pathology lab or at home. At Maurya Labs the test is done on a machine called Fully Automatic Machine. The sample collection takes less than a minute.
What does the test result mean for the patient ?
If your child is diagnosed with Growth Hormone deficiency, they may benefit from treatment with GH supplementation. GH supplementation is an injected medicine that contains manufactured human growth hormone. When GH deficiency is diagnosed and treated early, some children can grow several inches in the first year of treatment. Others grow less and more slowly but still benefit from treatment.
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