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β-內啡肽(bEP)檢測試劑盒(酶聯免疫吸附試驗法)

ELISA Kit for Beta-Endorphin (bEP)

b-EP

  • β-內啡肽(bEP)檢測試劑盒(酶聯免疫吸附試驗法) 產品包裝(模擬)
  • β-內啡肽(bEP)檢測試劑盒(酶聯免疫吸附試驗法) 產品包裝(模擬)
  • β-內啡肽(bEP)檢測試劑盒(酶聯免疫吸附試驗法) 實驗結果圖
  • CEA806Ra.jpg 標準曲線圖
  • Certificate 通過ISO 9001、ISO 13485質量體系認證

特異性

本試劑盒用于檢測β-內啡肽(bEP),經檢測與其它相似物質無明顯交叉反應。
由于受到技術及樣本來源的限制,不可能完成對所有相關或相似物質交叉反應檢測,因此本試劑盒有可能與未經檢測的其它物質有交叉反應。

回收率

分別于定值血清及血漿樣本中加入一定量的β-內啡肽(bEP)(加標樣品),重復測定并計算其均值,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) 80-97 93
EDTA plasma(n=5) 82-91 87
heparin plasma(n=5) 85-105 88

精密度

精密度用樣品測定值的變異系數CV表示。CV(%) = SD/mean×100
批內差:取同批次試劑盒對低、中、高值定值樣本進行定量檢測,每份樣本連續測定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、高值定值樣本進行定量測定,每個樣本使用同一試劑盒重復測定8次,分別計算不同濃度樣本的平均值及SD值。
批內差: CV<10%
批間差: CV<12%

線性

在定值血清及血漿樣本內加入適量的β-內啡肽(bEP),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β-內啡肽(bEP)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) 92-103% 80-92% 86-94% 83-101%
EDTA plasma(n=5) 88-95% 79-103% 80-103% 94-103%
heparin plasma(n=5) 79-99% 95-103% 98-105% 99-105%

穩定性

經測定,試劑盒在有效期內按推薦溫度保存,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,實驗室的環境條件需盡量保持一致,尤其是實驗室內溫度、濕度及溫育條件。其次由同一實驗員來進行操作可減少人為誤差。

實驗流程

1. 實驗前標準品、試劑及樣本的準備;
2. 加樣(標準品及樣本)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。

實驗原理

本試劑盒應用競爭抑制酶聯免疫分析法測定標本中待測物質水平。將β-內啡肽(bEP)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記的抗原和待測抗原(標準品或樣本),待測抗原與生物素標記抗原對特異性抗體進行競爭結合。溫育后經洗滌去掉未結合物,然后加入HRP標記的親和素,經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化成藍色,并在酸的作用下轉化成最終的黃色。待測標本濃度越高,標記抗原和抗體的結合就越受到抑制,顯色愈淺。顯色的深淺與酶量呈正相關,而與樣品中待測物質含量呈負相關。用酶標儀在450nm波長下測定吸光度(O.D.值),計算樣品濃度。

相關產品

編號 適用物種:Rattus norvegicus (Rat,大鼠) 應用(僅供研究使用,不用于臨床診斷!)
UCPA806Ra21 β-內啡肽(bEP)卵白蛋白偶聯物 Immunogen; SDS-PAGE; WB.
UPAA806Ra01 β-內啡肽(bEP)多克隆抗體 IHC; ICC; IP.
UCEA806Ra β-內啡肽(bEP)檢測試劑盒(酶聯免疫吸附試驗法) Enzyme-linked immunosorbent assay for Antigen Detection.
UCCA806Ra β-內啡肽(bEP)檢測試劑盒(化學發光免疫分析法) Chemiluminescent immunoassay for Antigen Detection.
ULMA806Ra β-內啡肽(bEP)等多因子檢測試劑盒(流式熒光發光法) FLIA Kit for Antigen Detection.
UKSA806Ra11 β-內啡肽(bEP)檢測試劑盒DIY材料(酶聯免疫吸附試驗法) Main materials for "Do It (ELISA Kit) Yourself".

參考文獻

雜志 參考文獻
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