胃蛋白酶(PP)檢測試劑盒(酶聯(lián)免疫吸附試驗(yàn)法)
ELISA Kit for Pepsin (PP)
- 編號CEA632Hu
 - 物種Homo sapiens (Human,人)相同的名稱,不同的物種。
 - 實(shí)驗(yàn)方法競爭抑制
 - 反應(yīng)時長2h
 - 檢測范圍2.47-200ng/mL
 - 靈敏度最小可檢測劑量小于等于0.87ng/mL.
 - 樣本類型serum, plasma, tissue homogenates, cell lysates, cell culture supernates and other biological fluids
 - 下載英文說明書 中文說明書
 - 規(guī)格48T96T96T*596T*1096T*100
 - 價格¥ 2793¥ 3990¥ 17955¥ 33915¥ 279300
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特異性
                        本試劑盒用于檢測胃蛋白酶(PP),經(jīng)檢測與其它相似物質(zhì)無明顯交叉反應(yīng)。
                        由于受到技術(shù)及樣本來源的限制,不可能完成對所有相關(guān)或相似物質(zhì)交叉反應(yīng)檢測,因此本試劑盒有可能與未經(jīng)檢測的其它物質(zhì)有交叉反應(yīng)。
                    
回收率
分別于定值血清及血漿樣本中加入一定量的胃蛋白酶(PP)(加標(biāo)樣品),重復(fù)測定并計算其均值,回收率為測定值與理論值的比率。
| 樣本 | 回收率范圍(%) | 平均回收率(%) | 
| serum(n=5) | 93-102 | 97 | 
| EDTA plasma(n=5) | 81-99 | 91 | 
| heparin plasma(n=5) | 88-99 | 94 | 
精密度
                    精密度用樣品測定值的變異系數(shù)CV表示。CV(%) = SD/mean×100 
                    批內(nèi)差:取同批次試劑盒對低、中、高值定值樣本進(jìn)行定量檢測,每份樣本連續(xù)測定20 次,分別計算不同濃度樣本的平均值及SD值。
                    批間差:選取3個不同批次的試劑盒分別對低、中、高值定值樣本進(jìn)行定量測定,每個樣本使用同一試劑盒重復(fù)測定8次,分別計算不同濃度樣本的平均值及SD值。
                    批內(nèi)差: CV<10% 
                    批間差: CV<12% 
線性
在定值血清及血漿樣本內(nèi)加入適量的胃蛋白酶(PP),并倍比稀釋成1:2,1:4,1:8,1:16的待測樣本,線性范圍即為稀釋后樣本中胃蛋白酶(PP)含量的測定值與理論值的比率。
| 樣本 | 1:2 | 1:4 | 1:8 | 1:16 | 
| serum(n=5) | 88-99% | 92-105% | 86-94% | 78-101% | 
| EDTA plasma(n=5) | 83-97% | 82-101% | 86-99% | 95-102% | 
| heparin plasma(n=5) | 97-105% | 85-94% | 97-104% | 97-104% | 
穩(wěn)定性
                    經(jīng)測定,試劑盒在有效期內(nèi)按推薦溫度保存,其活性降低率小于5%。
                    為減小外部因素對試劑盒破壞前后檢測值的影響,實(shí)驗(yàn)室的環(huán)境條件需盡量保持一致,尤其是實(shí)驗(yàn)室內(nèi)溫度、濕度及溫育條件。其次由同一實(shí)驗(yàn)員來進(jìn)行操作可減少人為誤差。
                
實(shí)驗(yàn)流程
1. 實(shí)驗(yàn)前標(biāo)準(zhǔn)品、試劑及樣本的準(zhǔn)備;
                            2. 加樣(標(biāo)準(zhǔn)品及樣本)50µL,
                                加入50µL檢測液A(臨用前配制);
                                37°C溫育1小時。
                            3. 洗板3次;
                            4. 加檢測溶液B100µL,37°C孵育30分鐘;
                            5. 洗板5次;
                            6. 加TMB底物90µL,37°C孵育10-20分鐘;
                            7. 加終止液50µL,立即450nm讀數(shù)。
實(shí)驗(yàn)原理
本試劑盒應(yīng)用競爭抑制酶聯(lián)免疫分析法測定標(biāo)本中待測物質(zhì)水平。將胃蛋白酶(PP)單克隆抗體包被微孔板,制成固相載體,往包被抗體的微孔中同時加入生物素標(biāo)記的抗原和待測抗原(標(biāo)準(zhǔn)品或樣本),待測抗原與生物素標(biāo)記抗原對特異性抗體進(jìn)行競爭結(jié)合。溫育后經(jīng)洗滌去掉未結(jié)合物,然后加入HRP標(biāo)記的親和素,經(jīng)過溫育和徹底洗滌后加入底物TMB顯色。TMB在過氧化物酶的催化下轉(zhuǎn)化成藍(lán)色,并在酸的作用下轉(zhuǎn)化成最終的黃色。待測標(biāo)本濃度越高,標(biāo)記抗原和抗體的結(jié)合就越受到抑制,顯色愈淺。顯色的深淺與酶量呈正相關(guān),而與樣品中待測物質(zhì)含量呈負(fù)相關(guān)。用酶標(biāo)儀在450nm波長下測定吸光度(O.D.值),計算樣品濃度。
相關(guān)產(chǎn)品
| 編號 | 適用物種:Homo sapiens (Human,人) | 應(yīng)用(僅供研究使用,不用于臨床診斷!) | 
| NPA632Hu01 | 胃蛋白酶(PP)天然蛋白 | Positive Control; Immunogen; SDS-PAGE; WB. | 
| CPA632Hu21 | 胃蛋白酶(PP)卵白蛋白偶聯(lián)物 | Immunogen; SDS-PAGE; WB. | 
| CPA632Hu23 | 胃蛋白酶(PP)卵白蛋白偶聯(lián)物 | Immunogen; SDS-PAGE; WB. | 
| CPA632Hu22 | 胃蛋白酶(PP)卵白蛋白偶聯(lián)物 | Immunogen; SDS-PAGE; WB. | 
| PAA632Hu02 | 胃蛋白酶(PP)多克隆抗體 | WB | 
| PAA632Hu08 | 胃蛋白酶(PP)多克隆抗體 | WB; IHC; ICC; IP. | 
| PAA632Hu01 | 胃蛋白酶(PP)多克隆抗體 | WB; IHC | 
| PAA632Hu09 | 胃蛋白酶(PP)多克隆抗體 | WB; IHC; ICC; IP. | 
| LAA632Hu71 | 胃蛋白酶(PP)多克隆抗體(生物素標(biāo)記) | WB; IHC; ICC. | 
| MAA632Hu22 | 胃蛋白酶(PP)單克隆抗體 | WB; IHC | 
| SEA632Hu | 胃蛋白酶(PP)檢測試劑盒(酶聯(lián)免疫吸附試驗(yàn)法) | Enzyme-linked immunosorbent assay for Antigen Detection. | 
| CEA632Hu | 胃蛋白酶(PP)檢測試劑盒(酶聯(lián)免疫吸附試驗(yàn)法) | Enzyme-linked immunosorbent assay for Antigen Detection. | 
| IEA632Hu | 胃蛋白酶(PP)檢測試劑盒(酶聯(lián)免疫吸附試驗(yàn)法,快捷型) | Enzyme-linked immunosorbent assay for Antigen Detection. | 
| LMA632Hu | 胃蛋白酶(PP)等多因子檢測試劑盒(流式熒光發(fā)光法) | FLIA Kit for Antigen Detection. | 
| KSA632Hu11 | 胃蛋白酶(PP)檢測試劑盒DIY材料(酶聯(lián)免疫吸附試驗(yàn)法) | Main materials for "Do It (ELISA Kit) Yourself". | 
參考文獻(xiàn)
| 雜志 | 參考文獻(xiàn) | 
| 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] | 





