Haptoglobin

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The normal range is 41–165 mg/dL (milligrams per deciliter).

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

Higher-than-normal levels may be due to:

• Acute rheumatic disease
• Biliary obstruction
• Peptic ulcer
• Ulcerative colitis
• Other inflammatory conditions

Lower-than-normal levels may be due to:

• Chronic liver disease
• Drug-induced immune hemolytic anemia
• Erythroblastosis fetalis
• Hematoma
• Hemolytic anemia due to G6PD deficiency
• Idiopathic autoimmune hemolytic anemia
• Immune hemolytic anemia
• Primary liver disease
• Transfusion reaction

Review Date: 03/21/2010
Reviewed By: Linda J. Vorvick, MD, Medical Director, MEDEX Northwest Division of Physician Assistant Studies, University of Washington, School of Medicine; James R. Mason, MD, Oncologist, Director, Blood and Marrow Transplantation Program and Stem Cell Processing Lab, Scripps Clinic, Torrey Pines, California. 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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