Before revision: Myoglobinuria, the presence of myoglobin in the urine, occurs when the level in plasma exceeds 0.5–1.5 mg/dL ; once plasma levels reach 100 mg/dL , the concentration in the urine becomes sufficient for it to be visibly discolored and corresponds with the destruction of about 200 grams of muscle.
After revision: Myoglobinuria, the presence of myoglobin in the urine, occurs when the level in plasma exceeds ; once plasma levels reach , the concentration in the urine becomes sufficient for it to be visibly discolored and corresponds with the destruction of about 200 grams of muscle.