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Alpha fetoprotein
Alternate Names : Fetal alpha globulin, AFP
Normal Values
The normal values in males or nonpregnant females is generally less than 40 micrograms/liter. Note: Normal value ranges may vary slightly among different laboratories. Talk to your doctor about the meaning of your specific test results.
What do Abnormal Results Mean?
Greater-than-normal levels of AFP may be due to:
During pregnancy, abnormal levels of AFP (as part of a quadruple screen) may be due to: - Birth defects, including:
- Inaccurate due date
- Intrauterine death (usually results in a miscarriage)
- Multiple pregnancy (twins, triplets, etc.)
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Review Date : 9/2/2009
Reviewed By : Linda J. Vorvick, MD, Medical Director, MEDEX Northwest Division of Physician Assistant Studies, University of Washington, School of Medicine; and 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.
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