The Urine For Hemoglobinuria test is a simple, non-invasive test that looks for hemoglobin (the oxygen-carrying protein from red blood cells) in your urine. This is different from a standard test that just looks for intact red blood cells. Hemoglobin in the urine is a critical sign of "hemolysis"—a condition where red blood cells are being destroyed within your bloodstream. This test is essential for investigating a range of conditions, including hemolytic anemias, transfusion reactions, or severe muscle injury. This simple urine sample provides a fast, clear, and vital clue, helping your doctor find the root cause of your condition.