胃蛋白酶(PP)等多因子检测试剂盒(流式荧光发光法)
Multiplex Assay Kit for Pepsin (PP) ,etc. by FLIA (Flow Luminescence Immunoassay)
（注：单次混测多因子不超过8个指标 ）
- 编号LMA632Mu
- 物种Mus musculus (Mouse，小鼠) 相同的名称，不同的物种。
- 实验方法竞争抑制
- 反应时长1.5h
- 检测范围0.2-200ng/mL
- 灵敏度最小可检测剂量小于等于0.067 ng/mL.
- 样本类型serum, plasma, tissue homogenates, cell lysates, cell culture supernates and other biological fluids
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产品包装(模拟)
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产品包装(模拟)
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通过ISO 9001、ISO 13485质量体系认证
特异性
本试剂盒用于检测胃蛋白酶(PP)等多因子检测试剂盒(流式荧光发光法)，经检测与其它相似物质无明显交叉反应。
由于受到技术及样本来源的限制，不可能完成对所有相关或相似物质交叉反应检测，因此本试剂盒有可能与未经检测的其它物质有交叉反应。
回收率
分别于定值血清及血浆样本中加入一定量的胃蛋白酶(PP)等多因子检测试剂盒(流式荧光发光法)（加标样品），重复测定并计算其均值，回收率为测定值与理论值的比率。
| 样本 | 回收率范围(%) | 平均回收率(%) |
| serum(n=5) | 87-105 | 101 |
| EDTA plasma(n=5) | 79-95 | 91 |
| heparin plasma(n=5) | 88-95 | 92 |
精密度
精密度用样品测定值的变异系数CV表示。CV(%) = SD/mean×100
批内差：取同批次试剂盒对低、中、高值定值样本进行定量检测,每份样本连续测定20 次，分别计算不同浓度样本的平均值及SD值。
批间差：选取3个不同批次的试剂盒分别对低、中、高值定值样本进行定量测定，每个样本使用同一试剂盒重复测定8次，分别计算不同浓度样本的平均值及SD值。
批内差： CV<10%
批间差： CV<12%
线性
在定值血清及血浆样本内加入适量的胃蛋白酶(PP)等多因子检测试剂盒(流式荧光发光法)，并倍比稀释成1:2，1:4，1:8，1:16的待测样本，线性范围即为稀释后样本中胃蛋白酶(PP)等多因子检测试剂盒(流式荧光发光法)含量的测定值与理论值的比率。
| 样本 | 1:2 | 1:4 | 1:8 | 1:16 |
| serum(n=5) | 78-103% | 97-105% | 96-104% | 96-103% |
| EDTA plasma(n=5) | 83-91% | 93-105% | 84-91% | 90-101% |
| heparin plasma(n=5) | 95-103% | 91-98% | 78-94% | 78-101% |
稳定性
经测定，试剂盒在有效期内按推荐温度保存，其活性降低率小于5%。
为减小外部因素对试剂盒破坏前后检测值的影响，实验室的环境条件需尽量保持一致，尤其是实验室内温度、湿度及温育条件。其次由同一实验员来进行操作可减少人为误差。
实验流程
1. 实验前标准品、试剂及样本准备；
2. 加样（标准品、样本、磁珠、检测溶液A）标准品或样本50μL及磁珠10μL，加检测溶液A50μL，
37°C酶标板振荡器孵育60分钟；
3. 磁吸洗板3次；
4. 加检测溶液B100μL，37°C振动孵育30分钟；
5. 磁吸洗板3次；
6. 加鞘液100μL，旋涡震荡2分钟后读数。
实验原理
将胃蛋白酶(PP)等多因子检测试剂盒(流式荧光发光法)抗体包被于磁珠，制成固相载体，向微孔中分别加入标准品或标本以及磁珠、标记VEGFA，标记的胃蛋白酶(PP)等多因子检测试剂盒(流式荧光发光法)和未标记的胃蛋白酶(PP)等多因子检测试剂盒(流式荧光发光法)与连接于固相载体上的抗体竞争结合，然后将未结合物洗净后，加入PE标记的亲和素，再次彻底洗涤后即可上机读数。MFI值和样品中的胃蛋白酶(PP)等多因子检测试剂盒(流式荧光发光法)呈负相关。
赠品
增值服务
相关产品
| 编号 | 适用物种：Mus musculus (Mouse，小鼠) | 应用(仅供研究使用，不用于临床诊断！) |
| MEA632Mu | 胃蛋白酶(PP)检测试剂盒(酶联免疫吸附试验法,小样本) | Enzyme-linked immunosorbent assay for Antigen Detection. |
| CEA632Mu | 胃蛋白酶(PP)检测试剂盒(酶联免疫吸附试验法) | Enzyme-linked immunosorbent assay for Antigen Detection. |
| LMA632Mu | 胃蛋白酶(PP)等多因子检测试剂盒(流式荧光发光法) | FLIA Kit for Antigen Detection. |
| KSA632Mu11 | 胃蛋白酶(PP)检测试剂盒DIY材料(酶联免疫吸附试验法) | Main materials for "Do It (ELISA Kit) Yourself". |
参考文献
| 杂志 | 参考文献 |
| Radiology and Oncology | LEVEL OF PEPSIN AND BILE ACIDS IN THE SALIVA OF PATIENTS WITH GLOTTIS T1 CARCINOMA [Szd:Source] |
| Radiology and Oncology | Higher levels of total pepsin and bile acids in the saliva as a possible risk factor for early laryngeal cancer [Pubmed:Pmc4362607] |
| Clin Otolaryngol | Pepsin and bile acids in saliva in patients with laryngopharyngeal reflux – a prospective comparative study [PubMed: 25516364] |
| journal of pediatric gastroenterology and nutrition | Does Positioning Affect Tracheal Aspiration of Gastric Content in Ventilated Infants? [PubMed: 25313850] |
| Journal of Voice | Detecting Laryngopharyngeal Reflux by Immunohistochemistry of Pepsin in the Biopsies of Vocal Fold Leukoplakia [pubmed:28756936] |
| Sensors (Basel) | Label-Free Detection of Salivary Pepsin Using Gold Nanoparticle/Polypyrrole Nanocoral Modified Screen-Printed Electrode [Pubmed:29882917] |
| The Tohoku Journal of Experimental Medicine | Association between Pepsin in Bronchoalveolar Lavage Fluid and Prognosis of Chronic Fibrosing Interstitial Lung Disease [] |
| Respiratory Research | Pulmonary aspiration in preschool children with cystic fibrosis [Pubmed: 30558606] |
| Tanaffos | Association of Bile Acid and Pepsin Micro-aspiration with Chronic Obstructive Pulmonary Disease Exacerbation [Pubmed: 31423141] |
| Sensors | Optimization of Saliva Collection and Immunochromatographic Detection of Salivary Pepsin for Point-of-Care Testing of Laryngopharyngeal Reflux [Pubmed: 31935973] |
| BIOSCIENCE REPORTS | Presence of pepsin in laryngeal tissue and saliva in benign and malignant neoplasms [Pubmed: 33103719] |
| OTOLARYNGOLOGY-HEAD AND NECK SURGERY | Relationship Between Pepsin Expression and Dysplasia Grade in Patients With Vocal Cord Leukoplakia [Pubmed: 32692278] |
| American Journal of Otolaryngology | Association of pepsin and DNA damage in laryngopharyngeal reflux-related vocal fold polyps [Pubmed: 32889371] |
| The relationship between laryngopharyngeal reflux based on pepsin value and clinical characteristics of laryngeal cancer patients [] | |
| Med Sci Monit | The Role of Salivary Pepsin in the Diagnosis of Gastroesophageal Reflux Disease (GERD) Evaluated Using High-Resolution Manometry and 24-Hour?¡ [33220027] |
| Annals of Esophagus | Pepsin properties, structure, and its accurate measurement: a narrative review [] |
| Laryngoscope | The Impact of Laryngopharyngeal Reflux on Occurrence and Clinical Course of Recurrent Respiratory Papillomatosis [34338331] |
| Pulmonology | Bronchoalveolar lavage (BAL) amylase and pepsin levels as potential biomarkers of aspiration pneumonia [Pubmed:35715334] |
| Neuromodulation: Technology at the Neural Interface | Transcutaneous Electrical Acustimulation Improved the Quality of Life in Patients With Diarrhea-Irritable Bowel Syndrome [Pubmed:35088760] |