Growth hormone test
Growth Hormone Test
Growth hormone tests are tests to measure the amount of human growth hormone (HGH) in the body. It is used to confirm a deficiency or an excess of the hormone and to evaluate the pituitary gland's ability to produce the hormone.The test is used to diagnose health problems such as dwarfism, giantism, and abnormally short or tall stature.
Preparation for the Test
The healthcare provider should be notified if the patient is taking any kind of hormones, such as thyroid hormone, steroids, birth control pills, or insulin. It is important to inform the healthcare provider about any drugs or supplements taken prior the test. Over-the-counter drugs may interfere with the test. It is recommended to stop taking tricyclic antidepressants, monoamine oxidase inhibitors, and mecamylamine at least three days prior to the test.
Procedure of the Test
The test is usually done as part of a series of tests, and it’s performed by collecting a blood sample from the person. The sample usually needs to be taken early in the morning before breakfast, as HGH levels tend to peak during the first couple hours of sleep. The blood sample will be transferred to a lab for testing. The lab will measure the levels of human growth hormone in the sample. Depending on the results, the doctor may then order other tests or treatments.
Types of Growth Hormone Tests
- Basal Growth Hormone Test – This test measures the amount of growth hormone in the body at rest or during the day. This test can be used to diagnose growth hormone deficiencies.
- Stimulation Test – This test measures the amount of growth hormone in the body after it has been stimulated or activated by certain chemicals or drugs. This test can be used to diagnose growth hormone excesses.
- Diagnostic Growth Hormone Test – This test measures the amount of growth hormone in the body during periods of intense activity. This type of test is used to diagnose growth hormone deficiencies.
- IGF-1 Test – This test measures the amount of insulin-like growth factor 1 (IGF-1) in the body. IGF-1 is a hormone produced in response to growth hormone, and it is used to diagnose growth hormone deficiencies.
Risks of the Test
Growth hormone tests are considered safe. However, like any medical procedure, there is always a slight risk of infection from the needle used to draw the blood sample. Additionally, the blood sample may be contaminated if it is not handled properly.
Why Is a Growth Hormone Test Done?
A growth hormone test is done to diagnose a deficiency or an excess of growth hormone in the body. It can be used to diagnose conditions such as dwarfism, gigantism, abnormal short or tall stature, and pituitary gland tumors.
When Is a Growth Hormone Test Done?
A growth hormone test may be done if the person is experiencing unusual growth patterns or has an abnormal physical appearance. It is also done if the person has mental retardation, delayed puberty, or recurrent infections. Additionally, the test may be done if the person has Cushing’s syndrome or a low birth weight.
