Diagnosis of verapamil toxicity is primarily clinical, based on the patientâs history, symptoms, and presentation. A healthcare provider will often consider recent medication history, including any potential overdoses. Diagnostic tools include electrocardiograms (ECGs) to identify conduction disturbances and blood tests to assess electrolyte imbalances and renal function. Drug levels may be measured if available, although they are not routinely used in acute settings.
