serum potassium

例句：

1. 1.Serum potassium levels are important for monitoring kidney function.
   血清钾水平对监测肾脏功能很重要。
2. 2. The doctor ordered a potassium supplement to help the patient recover.
   医生开了一种钾补充剂，帮助病人恢复。
3. 3.Potassium is essential for maintaining healthy blood pressure and preventing heart disease.
   钾对于保持健康的血压和预防心脏病至关重要。