serum total protein

例句：

1. 1. The doctor ordered a blood test to check the patient's serum total protein levels.
   医生要求进行血液检查，以检查患者的血清总蛋白水平。
2. 2.Serum total protein levels are an important indicator of kidney function.
   血清总蛋白水平是衡量肾脏功能的重要指标。
3. 3. A low serum total protein level can indicate anemia, which can lead to fatigue and weakness.
   血清总蛋白水平低可能表明贫血，这可能导致疲劳和虚弱。