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Why is hepatitis C virus (HCV) viral load being measured in international units?

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Different laboratories don't use the same standard for counting copies of hepatitis C (HCV) RNA. So, we're now moving to an international standard. You can still get a copy number, but using international units (IU) is a way to uniformly report data throughout the world. Many lab tests are reported in this way. It standardizes test results between different labs.

SOURCES: Frank Anania, MD, associate professor of medicine; director, hepatology, Emory University School of Medicine, Atlanta. Brian L. Pearlman, MD, medical director, center for hepatitis C, Atlanta Medical Center, Atlanta; associate professor, Medical College of Georgia, Augusta.

Reviewed by William Blahd on July 24, 2016

SOURCES: Frank Anania, MD, associate professor of medicine; director, hepatology, Emory University School of Medicine, Atlanta. Brian L. Pearlman, MD, medical director, center for hepatitis C, Atlanta Medical Center, Atlanta; associate professor, Medical College of Georgia, Augusta.

Reviewed by William Blahd on July 24, 2016

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