Growth Hormone — What It Means in Your Blood Test
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This hormone supports growth and helps the body build tissue and use fat and sugar.
A Growth Hormone reading captures a single moment of a hormone your body releases in bursts. Because it comes and goes, one figure is read carefully and often with other checks.
Also known as: GH, Somatotropin, Human growth hormone, hGH
This isn't a case where higher or lower is better. Your body keeps it in a narrow band, and both directions can matter.
Last reviewed: 2026-08-16
What is Growth Hormone?
The pituitary, a small gland beneath the brain, secretes this hormone in pulses. It signals cells to grow and shapes how the body handles protein, fat, and sugar.
Why is Growth Hormone tested?
You may have this test to check pituitary function. It also helps look into signs of too much or too little growth hormone.
What is a normal Growth Hormone range?
- India
- No India-specific national reference interval is published for this parameter; your lab's printed range is the most reliable comparison.
- Global
- Basal random levels: <1 ng/mL in adults (GH is pulsatile; stimulation or suppression tests are preferred for clinical evaluation); Children have higher random levels
Ranges vary by lab, method and equipment — the range printed on your own report is the one that applies to your result.
Source: [Endocrine Society, 2011]
What does your Growth Hormone value mean?
There is no widely-accepted set of value bands for this parameter. Compare your result with the reference range printed on your own report, and discuss it with your doctor.
What does a high Growth Hormone result mean?
A high result can link to the pituitary making too much. It can also come from other sources that make growth hormone. Your doctor can help interpret it.
What does a low Growth Hormone result mean?
A low or undetectable single result is common in healthy adults. The hormone comes in bursts, so one value alone does not show a shortage.
What can affect your Growth Hormone result?
- It comes in bursts, so one random result tells you little
- Sleep stage (peaks in deep sleep)
- Exercise (raises it briefly)
- Blood sugar level (lowers it)
- Age and sex (women often have higher random levels)
Questions to ask your doctor
About this result
- What does my Growth Hormone result mean for me specifically, given my age and health?
- Is my Growth Hormone in the range that is right for me, not just the lab's general range?
What to do next
- Could anything I eat, do, or take have affected my Growth hormone level result?
- Is there anything I should do about my Growth Hormone, or is it fine to leave as it is?
About retesting
- Does my Growth Hormone need to be repeated, and if so, when?
- The typical range for Growth Hormone can vary between labs — should I compare my result against my own lab's printed range?
The bigger picture
- Should my Growth Hormone be looked at together with my Total Testosterone and Free Testosterone result?
- Does my Growth Hormone connect to any condition I already have, or to anything I have noticed in how I feel?
Frequently asked questions
- What is Growth Hormone?
- The pituitary, a small gland beneath the brain, secretes this hormone in pulses. It signals cells to grow and shapes how the body handles protein, fat, and sugar. You may have this test to check pituitary function. It also helps look into signs of too much or too little growth hormone.
- What is a normal Growth hormone level range?
- A typical adult range is around Basal random levels: <1 ng/mL in adults (GH is pulsatile; stimulation or suppression tests are preferred for clinical evaluation); Children have higher random levels. No India-specific national reference interval is published for this parameter; your lab's printed range is the most reliable comparison. Ranges vary by lab, method and equipment — the range printed on your own report is the one that applies to your result.
- What does a high Growth Hormone result mean?
- A high result can link to the pituitary making too much. It can also come from other sources that make growth hormone. Your doctor can help interpret it.
- What does a low Growth Hormone result mean?
- A low or undetectable single result is common in healthy adults. The hormone comes in bursts, so one value alone does not show a shortage.
- What can affect your Growth Hormone result?
- Several everyday factors can influence it, including It comes in bursts, so one random result tells you little, Sleep stage (peaks in deep sleep), Exercise (raises it briefly), Blood sugar level (lowers it), Age and sex (women often have higher random levels).
Sources
- Endocrine Society (2011) — Evaluation and Treatment of Adult Growth Hormone Deficiency: An Endocrine Society Clinical Practice Guideline
- Growth Hormone Research Society (2018) — Consensus statement on the diagnosis and treatment of adults with GH deficiency
Part of the Hormones
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