大鼠白血病抑制因子（LIF）酶聯(lián)免疫檢測 試劑盒使用說明書 使用前仔細(xì)閱讀本說明書。本酶聯(lián)免疫試劑盒是基于雙抗體夾心技術(shù)原理，來檢測大鼠白血病抑制因子（LIF），只能用于研究用途，不得用于醫(yī)學(xué)診斷。 用 途：用于大鼠血清、血漿及相關(guān)液體樣本中白血病抑制因子（LIF）測定。 工作原理 本試劑盒采用的是生物素雙抗體夾心酶聯(lián)免疫吸附法（ELISA）測定樣品中大鼠白血病抑制因子（LIF）水平。向預(yù)先包被了大鼠白血病抑制因子（LIF）單克隆抗體的酶標(biāo)孔中加入大鼠白血病抑制因子（LIF），溫育；溫育后，加入生物素標(biāo)記的抗LIF抗體。再與鏈霉親和素-HRP結(jié)合，形成免疫復(fù)合物，再經(jīng)過溫育和洗滌，去除未結(jié)合的酶，然后加入底物A、B，產(chǎn)生藍(lán)色，并在酸的作用下轉(zhuǎn)化成zui終的黃色。顏色的深淺與樣品中大鼠白血病抑制因子（LIF）的濃度呈正相關(guān)。 試劑盒組成 | 試劑盒組成 | 48孔配置 | 96孔配置 | 保存 | | 說明書 | 1份 | 1份 | | | 封板膜 | 2片（48） | 2片（96） | | | 密封袋 | 1個(gè) | 1個(gè) | | | 酶標(biāo)包被板 | 1×48 | 1×96 | 2-8℃保存 | | 標(biāo)準(zhǔn)品2560ng/L | 0.5ml×1瓶 | 0.5ml×1瓶 | 2-8℃保存 | | 標(biāo)準(zhǔn)品稀釋液 | 3ml×1瓶 | 6ml×1瓶 | 2-8℃保存 | | 鏈霉親和素-HRP | 3 ml×1瓶 | 6 ml×1瓶 | 2-8℃保存 | | 生物素標(biāo)記的抗LIF抗體 | 0.5ml×1瓶 | 1 ml×1瓶 | 2-8℃保存 | | 顯色劑A液 | 3 ml×1瓶 | 6 ml×1瓶 | 2-8℃保存 | | 顯色劑B液 | 3 ml×1瓶 | 6 ml×1瓶 | 2-8℃保存 | | 終止液 | 3ml×1瓶 | 6ml×1瓶 | 2-8℃保存 | | 濃縮洗滌液 | （20ml×20倍）×1瓶 | （20ml×30倍）×1瓶 | 2-8℃保存 | 需要而未提供的試劑和器材 1． 37℃恒溫箱。 2． 標(biāo)準(zhǔn)規(guī)格酶標(biāo)儀。 3． 精密移液器及一次性吸頭 4． 蒸餾水， 5． 一次性試管 6． 吸水紙 注意事項(xiàng) 1． 從2-8℃取出的試劑盒，在開啟試劑盒之前要室溫平衡至少30分鐘。酶標(biāo)包被板開封后如未用完，板條應(yīng)裝入密封袋中保存。 2． 各步加樣均應(yīng)使用加樣器，并經(jīng)常校對其準(zhǔn)確性，以避免試驗(yàn)誤差 3． 嚴(yán)格按照說明書的操作進(jìn)行，試驗(yàn)結(jié)果判定必須以酶標(biāo)儀讀數(shù)為準(zhǔn). 4． 為避免交叉污染，要避免重復(fù)使用手中的吸頭和封板膜。 5． 不用的其它試劑應(yīng)包裝好或蓋好。不同批號(hào)的試劑不要混用。保質(zhì)前使用。 6． 底物B對光敏感，避免長時(shí)間暴露于光下。 洗板方法 手工洗板方法：甩掉酶標(biāo)板內(nèi)的液體；在實(shí)驗(yàn)臺(tái)上鋪墊幾層吸水紙，酶標(biāo)板朝下用力拍幾次；將稀釋后的洗滌液至少0.35ml注入孔內(nèi)，浸泡1-2分鐘。根據(jù)需要，重復(fù)此過程數(shù)次。 自動(dòng)洗板：如果有自動(dòng)洗板機(jī)，應(yīng)在熟練使用后再用到正式實(shí)驗(yàn)過程中 標(biāo)本要求 1．不能檢測含NaN3的樣品，因NaN3抑制辣根過氧化物酶的（HRP）活性。 2．標(biāo)本采集后盡早進(jìn)行提取，提取按相關(guān)文獻(xiàn)進(jìn)行，提取后應(yīng)盡快進(jìn)行實(shí)驗(yàn)。若不能馬上進(jìn)行試驗(yàn)，可將標(biāo)本放于-20℃保存，但應(yīng)避免反復(fù)凍融。 操作程序 1. 標(biāo)準(zhǔn)品的稀釋：（本試劑盒提供原倍標(biāo)準(zhǔn)品一支，用戶可按照下列圖表在小試管中進(jìn)行稀釋。） | 1280ng/L | 5號(hào)標(biāo)準(zhǔn)品 | 120μl的原倍標(biāo)準(zhǔn)品加入120μl標(biāo)準(zhǔn)品稀釋液 | | 640ng/L | 4號(hào)標(biāo)準(zhǔn)品 | 120μl的5號(hào)標(biāo)準(zhǔn)品加入120μl標(biāo)準(zhǔn)品稀釋液 | | 320ng/L | 3號(hào)標(biāo)準(zhǔn)品 | 120μl的4號(hào)標(biāo)準(zhǔn)品加入120μl標(biāo)準(zhǔn)品稀釋液 | | 160ng/L | 2號(hào)標(biāo)準(zhǔn)品 | 120μl的3號(hào)標(biāo)準(zhǔn)品加入120μl標(biāo)準(zhǔn)品稀釋液 | | 80ng/L | 1號(hào)標(biāo)準(zhǔn)品 | 120μl的2號(hào)標(biāo)準(zhǔn)品加入120μl標(biāo)準(zhǔn)品稀釋液 | 2. 根據(jù)代測樣品數(shù)量加上標(biāo)準(zhǔn)品的數(shù)量決定所需的板條數(shù)。每個(gè)標(biāo)準(zhǔn)品和空白孔建議做復(fù)孔。每個(gè)樣品根據(jù)自己的數(shù)量來定，能使用復(fù)孔的盡量做復(fù)孔。 3. 加樣：1）空白孔，空白對照孔不加樣品，生物素標(biāo)記的抗LIF抗體，鏈霉親和素-HRP，只加顯色劑A&B和終止液，其余各步操作相同；2）標(biāo)準(zhǔn)品孔：加入標(biāo)準(zhǔn)品50ul，鏈霉親和素-HRP50ul（標(biāo)準(zhǔn)品中已事先整合好生物素抗體，故不加）；3）代測樣品孔：加入樣本40ul，然后各加入抗LIF抗體10ul、鏈霉親和素-HRP50ul，蓋上封板膜，輕輕震蕩混勻，37℃溫育60分鐘。 4. 配液：將30倍濃縮洗滌液用蒸餾水30倍稀釋后備用。 5. 洗滌：小心揭掉封板膜，棄去液體，甩干，每孔加滿洗滌液，靜置30秒后棄去，如此重復(fù)5次，拍干。 6. 顯色：每孔先加入顯色劑A50ul，再加入顯色劑B50μl，輕輕震蕩混勻，37℃避光顯色10分鐘. 7. 終止：每孔加終止液50μl，終止反應(yīng)（此時(shí)藍(lán)色立轉(zhuǎn)黃色）。 8. 測定：以空白空調(diào)零，450nm波長依序測量各孔的吸光度（OD值）。 測定應(yīng)在加終止液后10分鐘以內(nèi)進(jìn)行。 9. 根據(jù)標(biāo)準(zhǔn)品的濃度及對應(yīng)的OD值計(jì)算出標(biāo)準(zhǔn)曲線的直線回歸方程，再根據(jù)樣品的OD值在回歸方程上計(jì)算出對應(yīng)的樣品濃度。也可以使用各種應(yīng)用軟件來計(jì)算。 操作程序總結(jié)： 準(zhǔn)備試劑，樣品和標(biāo)準(zhǔn)品 |
加入準(zhǔn)備好的樣品和標(biāo)準(zhǔn)品，生物素標(biāo)記的二抗和酶標(biāo)試劑，37℃反應(yīng)60分鐘 |
檢測范圍：60ng/L→1280ng/L。 保存：2-8℃。 有效期：6個(gè)月（2-8℃）。 Rat Leukemia inhibitory factor （LIF） ELISA Kit Instruction This kit is only for scientific research, and shall not be used as a clinical diagnosis of use. Purpose This kit allows for the determination of LIF concentrations in Rat serum, cell culture supernatant, and other biological fluids. Principle The kit assay Rat LIF level in the sample，add Rat LIF antibody to microtiter plate wells, after Incubating,add Biotinylated anti –LIF -antibody , then Combined Streptavidin-HRP, become complex, after Incubating and washing Compley, Add TMB substrate solution,TMB substrate becomes blue color, reaction is terminated by the addition of a sulphuric acid solution and the color change is measured spectrophotometrically at a wavelength of 450 nm. The concentration of LIF in the samples is then determined by comparing the O.D. of the samples to the standard curve. Materials provided with the kit | Materials provided with the kit | 48determinations | 96 determinations | Storage | | User manual | 1 | 1 | | | Closure plate membrane | 2 | 2 | | | Sealed bags | 1 | 1 | | | Microelisa stripplate | 1 | 1 | 2-8℃ | | Standard：2560ng/L | 0.5ml×1 bottle | 0.5ml×1 bottle | 2-8℃ | | Standard diluent | 3ml×1 bottle | 6ml×1 bottle | 2-8℃ | | Streptavidin-HRP | 3ml×1 bottle | 6ml×1 bottle | 2-8℃ | | Biotinylated anti –LIF -antibody | 0.5ml×1 bottle | 1ml×1 bottle | 2-8℃ | | Chromogen Solution A | 3ml×1 bottle | 6ml×1 bottle | 2-8℃ | | Chromogen Solution B | 3ml×1 bottle | 6ml×1 bottle | 2-8℃ | | Stop Solution | 3ml×1 bottle | 6ml×1 bottle | 2-8℃ | | wash solution | （20ml×20 fold） ×1bottle | （20ml×30 fold） ×1bottle | 2-8℃ | Materials required but not supplied 1. 37 ℃ incubator 2. Standard microplate reader（450nm） 3. Precision pipettes and Disposable pipette tips. 4. deionized water. 5. Disposable Test tube 6 Absorbent paper Important notes 1. The kit takes out from the refrigeration environment should be balanced 15-30 minutes in the room temperature, ELISA plates coated if has not use up after opened, the plate should be stored in Sealed bag. 2. add Sample with sampler Each step, And proofread its accuracy frequently, avoids the experimental error. 3. Please according to use instruction strictly, The test result determination must take the microtiter plate reader as a standard. 4. Use new disposal plastic pipette tips and Closure plate membrane for each standard, in order to avoid cross contamination. 5. Do not mix reagents with those from other lots. 6. The substrate evade the light preservation. Specimen requirements 1. extract as soon as possible after Specimen collection,and according to the relevant literature, and should be experiment as soon as possible after the extraction. If it can’t, specimen can be kept in -20 ℃ to preserve, Avoid repeated freeze-thaw cycles. 2. Can’t detect the sample which contain NaN3, because NaN3 inhibits HRP active. Assay procedure 1. Dilute and add sample:Dilute Original density Standard as follow table: | 1280ng/L | 5 Standard | 120μl Original density Standard+120μl Standard diluent | | 640ng/L | 4 Standard | 120μl 5 Standard+120μl Standard diluent | | 320ng/L | 3 Standard | 120μl 4 Standard+120μl Standard diluent | | 160ng/L | 2 Standard | 120μl 3 Standard +120μl Standard diluent | | 80ng/L | 1 Standard | 120μl 2 Standard +120μl Standard diluent | 2. according testing Sample numbers to define how many wells nedd, Standard and blank suggested Do holes. 3.add sample：1） blank wells: （blank comparison wells don’t add sample , Biotinylated anti –LIF -antibody and Streptavidin-HRP ,other each step operation is same）; 2） Standard wells: add Standard 50μl and Streptavidin-HRP 50μl; 3） testing Sample wells: add sample 40μl,then add anti –LIF -antibody 10μl , Streptavidin-HRP 50μl. closing plate with Closure plate membrane ,incubate for 60 min at 37℃. 4.Configurate liquid: 30-fold（or 20-fold） wash solution diluted 30-fold （or 20-fold） with distilled water and reserve. 5.washing：Uncover Closure plate membrane, discard Liquid, dry by swing, add washing buffer to every well, still for 30s then drain, repeat 5 times, dry by pat. 6.color：Add Chromogen Solution A 50ul and Chromogen Solution B to each well, evade the light preservation for 10 min at 37℃ 7.Stop the reaction：Add Stop Solution50μl to each well, Stop the reaction（the blue color change to yellow color）. 8.assay：take blank well as zero , Read absorbance at 450nm after Adding Stop Solution and within 10min. 9. Calculate of result Steps description
| Add Standard, Sample diluent, Biotinylated and HRP ,incubate for 60 min at 37℃. |
| Wash 5 times,Add Chromogen Solution A and B, incubate for 15 min at 37℃. |
| Read absorbance at 450nm within 15 min |
Assay range 60ng/L→1280ng/L Storage and validity 1．Storage： 2-8℃. 2．validity： six months. |
