immunoassay

例句：

1. 1. The immunoassay was used to detect the presenceof a particular protein in the blood sample.
   免疫测定被用来检测血液样本中特定蛋白质的存在。
2. 2. The immunoassay was usedto determine the concentration of a drug inthe patient's blood.
   免疫测定被用来确定病人血液中药物的浓度。
3. 3. The immunoassay is a sensitive and accurate methodfor measuring the level of a specific substancein a sample.
   免疫测定是一种敏感且准确的方法，用于测量样品中特定物质的水平。