serum drug level

例句：

1. 1.The patient's serum drug level is elevated, which indicates that the medication is not working as expected.
   患者的血清药物水平升高，表明药物没有达到预期效果。
2. 2.The doctor ordered a blood test to check the patient's serum drug level.
   医生要求进行血液检查以检查患者的血清药物水平。
3. 3.The results of the serum drug level test will be available in a few hours.
   血清药物水平测试的结果将在几小时内提供。