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Growth Hormone Antibody Blood Test

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The Growth Hormone Antibody Blood Test detects growth hormone antibodies to help screen for a deficiency or excess.


Test Code:


CPT Code(s):



Radiobinding Assay (RBA)




No special preparation is required.

Test Results:

7-10 business days. May take longer based on weather, holiday, or lab delays.

Walk-In Lab is prohibited from selling Quest tests to residents in the following states:AZ, NY, NJ, RI

What is the purpose of this test?

The Growth Hormone Antibody Blood Test is a medical diagnostic tool that is primarily used to detect the presence of antibodies against growth hormone in the blood. Growth hormone is a protein hormone that is secreted by the pituitary gland and plays a vital role in regulating growth, metabolism, and body composition. The test is commonly used to diagnose growth hormone deficiency or excess in individuals, which can lead to stunted growth, delayed puberty, and other medical conditions. The test is also useful in monitoring the effectiveness of growth hormone replacement therapy, which is often used to treat growth hormone deficiencies. The test results can help healthcare providers adjust the dosage of growth hormone replacement therapy to ensure that the patient is receiving the appropriate amount of the hormone.

During the test, a blood sample is collected from the patient and sent to a laboratory for analysis. The laboratory technicians use a specialized assay to detect the presence of growth hormone antibodies in the blood. If the test results show the presence of antibodies, it may indicate that the patient has an autoimmune disorder that is causing the body to produce antibodies against its own growth hormone. In some cases, the test results may also indicate the presence of a tumor that is producing excess growth hormone. Overall, the Growth Hormone Antibody Blood Test is a valuable diagnostic tool that helps healthcare providers to accurately diagnose and treat growth hormone-related disorders.


Who would benefit from this test?

The Growth Hormone Antibody Blood Test would be beneficial for:

  • Individuals who have been diagnosed with pituitary tumors
  • Patients with a history of radiation therapy to the head or neck area
  • People with a family history of growth hormone disorders
  • Children who are not growing at a normal rate for their age
  • Adults experiencing symptoms of acromegaly, such as enlargement of hands and feet, facial features, and jaw.


When should I order a Growth Hormone Antibody Blood Test?

Individuals may order this test if they have experienced symptoms related to a growth hormone deficiency or excess. 

Symptoms of Growth Hormone Deficiency:

  • Delayed growth in children
  • Short stature in adults
  • Decreased muscle mass
  • Increased body fat
  • Fatigue
  • Decreased bone density
  • Decreased strength and stamina
  • Delayed puberty
  • Impaired concentration and memory
  • Depression and anxiety

Symptoms of Growth Hormone Excess:

  • Enlarged hands and feet
  • Coarsening of facial features
  • Protruding jaw and forehead
  • Increased sweating
  • Fatigue
  • Joint pain
  • Carpal tunnel syndrome
  • High blood sugar levels
  • Heart problems (High blood pressure)

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