Lab test
Growth Hormone Level Test - GH Blood Test
This blood test measures growth hormone (GH), also called human growth hormone, which is released by the pituitary gland.
- Typical price
- From $158
- Results
- 1-3 business days
- Preparation
- See preparation notes below
- Sample
- Blood draw or sample collection at a local center
About this test
This blood test measures growth hormone (GH), also called human growth hormone, which is released by the pituitary gland. GH drives growth during childhood and influences muscle, bone, and fat metabolism throughout life. Because GH is released in pulses, most heavily during sleep, its level in blood varies widely and is often interpreted through stimulation or suppression testing rather than a single random draw. The test is ordered to investigate suspected growth hormone deficiency or excess, delayed or abnormal growth in children, and certain pituitary conditions. Results are always considered with age, timing, and other hormone measurements.
What this test measures
- Growth Hormone (GH) A pituitary hormone that drives growth and influences metabolism.
Who this test may be right for
- Children with abnormal growth patterns
- Adults with suspected growth hormone deficiency or excess
- People being evaluated for pituitary gland conditions
- Individuals with unexplained changes in body composition or energy
Before your visit
- GH is often measured after a specific protocol such as fasting or stimulation; follow the instructions exactly
- Report all medications, including hormone therapies, to the laboratory
- Avoid strenuous exercise right before collection unless directed otherwise
Understanding your results
Growth hormone is compared against ranges appropriate to age and collection conditions. Because GH is released in pulses, a single random value can be hard to interpret, and low or high results may need confirmation with stimulation or suppression testing. Abnormal levels can be associated with pituitary disorders, but other factors such as sleep, stress, and nutrition also influence GH. A healthcare provider should interpret results with the overall picture.
Order this test online
- Buy online in a few minutes - no doctor's visit needed for most tests.
- Sample collection at a patient service center near you.
- Results are typically ready within 1-3 business days.
- Secure, lab-reviewed results delivered to your account.
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Questions people ask
Why is a single growth hormone measurement often not enough?
Growth hormone is released in bursts, so one sample can miss the peak or trough; providers may use stimulation or suppression protocols for a clearer assessment.
Does sleep affect growth hormone results?
Yes. Growth hormone is released mainly during sleep, so sleep patterns and collection timing are part of how results are interpreted.
Can growth hormone be tested in children?
Yes. Growth hormone testing is used when children show abnormal growth patterns, and it is interpreted with age-based references.
What can an elevated growth hormone level suggest?
An elevated level may raise concern about a pituitary condition, but a healthcare provider uses additional testing and clinical findings before concluding anything.
What does the Growth Hormone Level Test - GH Blood Test measure?
This blood test measures levels of Growth Hormon (GH, human growth hormone).
Do I need to fast before this test?
Follow the lab's instructions.
How long do results take?
Most Growth Hormone Level Test - GH Blood Test results are released in 1-3 business days. Specialty testing can take longer.
Is this test right for me?
This page is educational and not medical advice. Talk to a licensed healthcare provider about which tests fit your situation.
LabBookings is an independent directory. We compare test details and pricing information, but we are not a laboratory and we do not perform testing or provide medical advice. Always talk to a licensed healthcare provider about your results and treatment.
Laboratory services are provided by independent, CLIA-certified testing partners. Availability, pricing, and turnaround times can vary by location and are confirmed at checkout.