Torsades de pointes laboratory findings

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Laborotory tests obtained in a person with torsade de pointes will vary depending on the most likely etiology for their arrhythmia. Cardiac enzymes and levels of potassium, magnesium and calcium should be obtained.

• Electrolytes levels to rule out hypokalemia, hypomagnesemia, and hypocalcemia.
• Cardiac enzymes
• Drug levels for medications that cause torsades at toxic levels.