Medical Health Encyclopedia

PBG test


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Male urinary system
Male urinary system
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Alternative Names

Porphobilinogen test


Normal Values

For a random urine sample, a negative test result is considered normal.

If the test is done on a 24-hour urine sample, the normal value is less than 4 milligrams per 24 hours.

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


What abnormal results mean

Increased levels of PBG in the urine may be due to:



Review Date: 02/28/2011
Reviewed By: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine; and Yi-Bin Chen, MD, Leukemia/Bone Marrow Transplant Program, Massachusetts General Hospital. 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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