is the presence of myoglobin
in the urine, usually associated with rhabdomyolysis
or muscle destruction. Myoglobin is present in muscle
cells as a reserve of oxygen
, vascular problems, venoms
, certain drugs and other situations can destroy or damage the muscle, releasing myoglobin to the circulation and thus to the kidneys.
Under ideal situations myoglobin will be filtered and excreted with the urine, but if too much myoglobin is released into the circulation or in case of renal problems, it can occlude the renal filtration system leading to acute tubular necrosis and acute renal insufficiency.
McArdle's Disease is another cause of myoglobinuria.
After centrifuging, the serum of myologinuria is clear, where the serum of hemoglobinuria after centrifuge is pink.