Which of the following tests reflect an increase in red cell destruction?

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Bilirubinemia, hemoglobinemia, hemoglobinuria, and hemosiderinuria are all markers of an increase in red cell destruction. Bilirubinemia indicates that bilirubin, a breakdown product of hemoglobin, is accumulating in the blood. Hemoglobinemia indicates that free hemoglobin released from destroyed red cells is present in the blood. Hemoglobinuria indicates that free hemoglobin has been filtered by the kidneys and is being excreted in the urine. Hemosiderinuria indicates that iron from the breakdown of hemoglobin has been deposited in the kidneys and is being excreted in the urine.

Which of the Following Tests Reflect an Increase in Red