Definition of Hemoglobinuria

Reviewed on 3/23/2022

Hemoglobinuria: The presence of free hemoglobin in the urine may make the urine look dark. Normally, there is no hemoglobin in the urine. Hemoglobinuria is a sign of a number of abnormal conditions, such as bleeding and paroxysmal nocturnal hemoglobinuria.


The only purpose of the kidneys is to filter blood. See Answer
Jameson, J. Larry, et al. Harrison's Principles of Internal Medicine, 20th Ed. New York: McGraw-Hill Education, 2018.

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