How is rhabdomyolysis diagnosed?
Rhabdomyolysis is suggested by the history of recent and past events and the physical examination. It is confirmed by blood and urine testing. An important part of diagnosing rhabdomyolysis is a comprehensive medical history and physical examination. The medical history may include questions about any medication use, drug and alcohol use, other medical conditions, any trauma or accident, etc. Blood tests include a complete blood count (CBC), a metabolic panel, muscle enzymes, and urinalysis. The diagnosis of rhabdomyolysis is confirmed by detecting elevated muscle enzymes in blood. Muscle enzymes include creatine phosphokinase (CPK), SGOT, SGPT, and LDH. The levels of these enzymes rise as the muscle is destroyed in rhabdomyolysis. Of note, CPK is also in heart muscle (cardiac muscle) and brain. The laboratory is usually able to distinguish between the different components of this enzyme. For example, the fraction coming from skeletal muscle is referred to as CK-MM and the one from hea