Blood tests: Measuring serum potassium levels to confirm hypokalemia. Electrolyte panel: Checking other electrolytes like sodium, calcium, and magnesium, which can provide insights into the underlying cause. Electrocardiogram (ECG): Identifying any heart abnormalities that could be related to low potassium levels. Urine tests: Assessing kidney function and urinary potassium excretion to determine if renal losses are the cause.
