The aim of this study was to determine the levels of serum potassium and electrocardiographic parameters in young alpacas. Thirty alpacas (17 males and 13 females) from 1 to 60 days of age from various alpaca farms in Maranganí, Cusco were used. The levels of serum potassium was 5.91 plusmn; 1.48 mmol/L and without statistical differences between sexes. The electrocardiographic values were: P wave time, 0.04 plusmn; 0.0s; P wave amplitude, 0.173 plusmn; 0.058 mV; PQ time, 0.101 plusmn; 0.02 s; QRS time, 0.038 plusmn; 0.006 s; QRS complex, 0.557 plusmn; 0.412 mV; QT time, 0.237 plusmn; 0.040 s; T wave amplitude, 0.413 plusmn; 0.266 mV. Moreover, animals with increased T wave had potassium values above 5.5 mmol/L but without signs of heart disease. In addition, values of serum potassium and electrocardiographic paramters showed similarity to the values of other species.