LH response to GnRH

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Luteinizing hormone response to gonadotropin-releasing hormone

Normal value ranges may vary slightly among different laboratories. Talk to your doctor about the meaning of your specific test results.

An excessive LH response suggests that gonadal failure is due to a problem within the ovaries or testes.

A reduced LH response suggests a problem with the hypothalamus or pituitary gland.

Abnormal results may also be due to:

• Gonadotropin deficiency, may be seen in patients with:
  • Large pituitary tumors
  • Endocrine deficiency
  • Hemochromatosis
• Kallmann syndrome
• Hyperprolactinemia
• Amenorrhea
• Anorexia nervosa
• Starvation
• Obesity

Review Date: 07/29/2009
Reviewed By: Linda J. Vorvick, MD, Medical Director, MEDEX Northwest Division of Physician Assistant Studies, University of Washington, School of Medicine; Susan Storck, MD, FACOG, Chief, Eastside Department of Obstetrics and Gynecology, Group Health Cooperative of Puget Sound, Redmond, Washington; Clinical Teaching Faculty, Department of Obstetrics and Gynecology, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org).

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