1. an appraisal of the state of affairs;

   "they made an assay of the contents"
   "a check on its dependability under stress"
   

2. a substance that is undergoing an analysis of its components

3. a written report of the results of an analysis of the composition of some substance

4. a quantitative or qualitative test of a substance (especially an ore or a drug) to determine its components; frequently used to test for the presence or concentration of infectious agents or antibodies etc.

1. analyze (chemical substances)

2. make an effort or attempt;

   "He tried to shake off his fears"
   "The infant had essayed a few wobbly steps"
   "The police attempted to stop the thief"
   "He sought to improve himself"
   "She always seeks to do good in the world"
   

1.（确定物质纯度的）检验,化验,分析
Anassay is a test of a substance to find out what chemicals it contains. It is usually carried out to find out how pure a substance is.

1.

1. 测定：含量测定(assay) 解决优劣a. 精密度(precision)b . 准确度(accuracy)e.选择性(selectivity)它与专属性(specificity)的含义稍有不同. 专属性是指一种方法仅对一种分析成分产生唯一信号;选择性则可对多种化学成分产生不同响应,

2. assay的近义词

2. 含量测定：含量测定(assay) 解决优劣3.检测限(LOD)是指分析方法能够从背景信号中区分出药物时,所需样品中药物的最低浓度,无需定量测定. 4.定量限 (LOQ)是指在保证具有一定可靠性(一定准确度和精密度)的前提下,分析方法能够测定出的样品中药物的最低浓度.

3. assay

3. 含量：同时对大肠杆菌病、沙门氏菌、附红细胞体病、葡萄球菌病、禽霍乱及坏死性肠炎等各种细菌性疾病也有很好的治疗作用马来酸罗格列酮 CAS号155141-29-0 分子式(Molecular formula)C18H19N3O3SoC4H4O4 分子量(Molecular weight) 473.52 含 量(assay)≥99.0% 用途

4.

4. 定量分析：(5) 用于糖尿病(diabetes)的处理;(6) 用于直接从临床材料鉴别或推断微生物(microorganism)的特性;(7) 用于探测不同于免疫球蛋白G(immunoglobulin G,IgG)或IgG定量分析(assay)的微生物抗体(antibodies),