Growth Hormone

This is a blood test used to evaluate growth hormone levels. Growth hormone is the hormone which makes you grow. For example, a high level of this hormone may cause a giant to develop. This test is often used with people who are short, have delayed sexual maturity, or have other growth deficiencies. It is also used to find the cause of enlargement in persons who show signs of gigantism, persons with unusually large bone structure, or to help screen for pituitary malfunction.


It may be recommended that you do not eat for a specific amount of time prior to the test with only water permitted. It is also very important for you to be well rested prior to the testing.


  • Men: less than 5 ng/ml or less than 5 μg/L (SI units)

  • Women: less than 10 ng/ml or less than 10 μg/L

  • Children: 0-10 ng/ml or 0-10ìg/L

  • Newborn: 10-40 ng/ml or 10-40 ìg/L

Ranges for normal findings may vary among different laboratories and hospitals. You should always check with your doctor after having lab work or other tests done to discuss the meaning of your test results and whether your values are considered within normal limits.


Your caregiver will go over the test results with you and discuss the importance and meaning of your results, as well as treatment options and the need for additional tests if necessary.


It is your responsibility to obtain your test results. Ask the lab or department performing the test when and how you will get your results.