Growth Hormone Test (Arginine / Clonidine Stimulation Test)
Arginine and clonidine both stimulate the release of growth hormone. The test involves delivering a controlled dose of each of these medications and then measuring blood levels of growth hormone. This will tell us if the pituitary gland is secreting enough growth hormone. This test is performed to help diagnose growth hormone deficiency.
An IV catheter will be placed to give the arginine and to draw the blood samples. This procedure is slightly painful, but is done quickly.
The clonidine is a pill that is given orally.
Before the Test
Your child will not be allowed to have anything to eat or drink except water after midnight the night before the test. The test takes about 4 hours so have the child wear comfortable clothing. It would be best if the child wears a short-sleeved shirt to the test. This test takes about 3 hours to complete.
Explain what will happen to your child in simple terms that the child can understand.
During the Test
The test will take place in the Endocrinology Outpatient Clinic. When you arrive to clinic, your child will have his/her height and weight measured.
You will then go into a patient room where the IV catheter will be placed. This will be used to give the arginine and to draw the blood samples.
The clonidine will be given by mouth. Blood pressure will be measured throughout the test. The clonidine may lower blood pressure and cause your child to become sleepy.
After the Test
Your child will be given a menu to order a room service meal to eat after the test. Patients must be awake, able to eat and walk around before being discharged from the clinic. Your child may feel tired the rest of the evening.
Test results will be available 2 weeks after the test is completed. The Endocrinologist will notify you of the results.
There are no dietary restrictions following the test.
Activity
Your child may feel tired the evening following the test. He/she may not feel like doing any of his/her usual activities.
Call your child's doctor if you have any medical concerns about your child's condition.
Contact Us
For additional information on this or any Health Topic, please call the Family Resource Center, 513-636-7606, or your pediatrician.
Written 7/06
