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Endocrine Studies of Healthy Children

This study has been completed.
Information provided by:
National Institutes of Health Clinical Center (CC) Identifier:
First received: November 3, 1999
Last updated: June 30, 2017
Last verified: October 20, 2014

Researchers would like to determine normal ranges for hormone levels and to learn more about the genetics involved in hormone production and action. Researchers will take samples of blood, urine, saliva, and stool from healthy children ages 5-17 in order to study different aspects of hormones.

Establishing a range of normal hormone levels in children will make diagnosing illnesses with abnormal levels of hormones much easier. Hormone levels in the body can change throughout the day. By collecting samples at different times researchers hope to learn more about the normal daytime and nighttime patterns of hormone secretion. Because some hormone levels change with body size, researchers will also take measurements of patient's body composition.

This study will involve children and observe them as inpatients or as outpatients. <TAB>


Study Type: Observational
Official Title: Endocrine Studies of Healthy Children

Further study details as provided by National Institutes of Health Clinical Center (CC):

Enrollment: 1247
Study Start Date: August 28, 1984
Estimated Study Completion Date: October 20, 2014
Detailed Description:
We wish to obtain blood, urine, saliva, and stool specimens from healthy children ages 2-18 years for use in establishing the normal ranges of levels of hormones and the variations in genes that are important for hormones to act. Such hormone values are extremely important to allow endocrinologists to determine when hormone levels are truly abnormal in children suspected of an illness. Because the values of some hormones change with body size, we will obtain measurements of body composition when studying such hormones. Children participating in this study may be studied in the outpatient clinic (at most 2 blood draws) or as inpatients on the pediatric ward (for frequent blood sampling using an intravenous line over a 24-hour period). Other studies that may be performed as part of this study include ultrasound examinations of the thyroid, adrenal, ovaries or testes, and x-ray of the hand and wrist for bone age determination.

Ages Eligible for Study:   2 Years to 18 Years   (Child, Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Good general health.

Age 2 to 18 years.


Volunteers will be excluded for the following reasons:

Presence of renal, hepatic, gastrointestinal, most endocrinologic (e.g., Cushing's syndrome) or pulmonary disorders (other than asthma not requiring continuous medication);

Individuals who have, or whose parent or guardians have, current substance abuse or a psychiatric disorder or other condition which, in the opinion of the investigators, would impede the ability to give informed consent or possibly hinder completion of the study;

Subjects who regularly use prescription medications are not eligible. The use of over-the-counter medications will be reviewed on a case-by-case basis;

For those sub-studies involving MRI, inability to undergo MRI (e.g., volunteers with metal within their bodies including cardiac pacemakers, neural pacemakers, aneurysmal clips, shrapnel, ocular foreign bodies, cochlear implants, non-detachable electronic or electromechanical devices such as infusion pumps, nerve stimulators, bone growth stimulators, etc. that are contraindications).

  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00001195

United States, Maryland
National Institutes of Health Clinical Center, 9000 Rockville Pike
Bethesda, Maryland, United States, 20892
Sponsors and Collaborators
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
Principal Investigator: Jack A Yanovski, M.D. Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
  More Information

Publications automatically indexed to this study by Identifier (NCT Number): Identifier: NCT00001195     History of Changes
Other Study ID Numbers: 840169
Study First Received: November 3, 1999
Last Updated: June 30, 2017

Keywords provided by National Institutes of Health Clinical Center (CC):
Eating Behavior
Body Composition
Normal Volunteer processed this record on September 18, 2017