MB and Heat Stroke: Diagnosis of rhabdomyolysis was possible based on the presence of myoglobinuria, elevated serum myoglobin, and increased serum CK concentration that exceeded normal levels by five-fold following injury to the skeletal muscles, causing the release of intracellular contents into the blood stream.[8] Rhabdomyolysis is usually caused by trauma, excessive alcohol intake, convulsions, drugs, strenuous exercise, heat stroke, and infections.