Myoglobinuria

The pathological presence of myoglobin in urine, typically due to skeletal muscle fiber necrosis (rhabdomyolysis), and may lead to pigment-induced acute kidney injury if severe or persistent. Possible causes are crush injury, burns, electrical injury, prolonged immobilization, extremely strenuous exercise, drugs (alcohol abuse, cocaine, statins), influenza, HIV, heatstroke, seizure, hypokalemia, McArdle's disease, or CPT deficiency.