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儀器網(wǎng)> 資料庫>ELISA檢測試劑盒使用說明書,豬(Porcine)白細胞介素2(IL-2)

ELISA檢測試劑盒使用說明書,豬(Porcine)白細胞介素2(IL-2)

本文由 上海華壹生物科技有限公司 整理匯編

2018-11-15 10:00 559閱讀次數(shù)

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本試劑盒只能用于科學研究,不得用于醫(yī)學診斷檢測原理試劑盒采用雙抗體一步夾心法酶聯(lián)免疫吸附試驗(ELISA)。往預先包被白細胞介素2(IL-2)抗體的包被微孔中,依次加入標本、標準品、HRP標記的檢測抗體,經(jīng)過溫育并徹底洗滌。用底物TMB顯色,TMB在過氧化物酶的催化下轉(zhuǎn)化成藍色,并在酸的作用下轉(zhuǎn)化成Z終的黃色。顏色的深淺和樣品中的白細胞介素2(IL-2)呈正相關(guān)。用酶標儀在450nm波長下測定吸光度(OD值),計算樣品濃度。樣品收集、處理及保存方法1.血清:使用不含熱原和內(nèi)毒素的試管,操作過程中避免任何細胞刺激,收集血液后,3000轉(zhuǎn)離心10分鐘將血清和紅細胞迅速小心地分離。2.血漿:EDTA、檸檬酸鹽或肝素抗凝。3000轉(zhuǎn)離心30分鐘取上清。3.細胞上清液:3000轉(zhuǎn)離心10分鐘去除顆粒和聚合物。4.組織勻漿:將組織加入適量生理鹽水搗碎。3000轉(zhuǎn)離心10分鐘取上清。5.保存:如果樣本收集后不及時檢測,請按一次用量分裝,凍存于-20℃,避免反復凍融,在室溫下解凍并確保樣品均勻地充分解凍。自備物品1.酶標儀(450nm)2.高精度加樣器及槍頭:0.5-10uL、2-20uL、20-200uL、200-1000uL3.37℃恒溫箱操作注意事項1.試劑盒保存在2-8℃,使用前室溫平衡20分鐘。從冰箱取出的濃縮洗滌液會有結(jié)晶,這屬于正常現(xiàn)象,水浴加熱使結(jié)晶完全溶解后再使用。2.實驗中不用的板條應立即放回自封袋中,密封(低溫干燥)保存。3.濃度為0的S0號標準品即可視為陰性對照或者空白;按照說明書操作時樣本已經(jīng)稀釋5倍,Z終結(jié)果乘以5才是樣本實際濃度。4.嚴格按照說明書中標明的時間、加液量及順序進行溫育操作。5.所有液體組分使用前充分搖勻。試劑盒組成名稱96孔配置48孔配置備注微孔酶標板12孔×8條12孔×4條無標準品0.3mL*6管0.3mL*6管無樣本稀釋液6mL3mL無檢測抗體-HRP10mL5mL無20×洗滌緩沖液25mL15mL按說明書進行稀釋底物A6mL3mL無底物B6mL3mL無終止液6mL3mL無封板膜2張2張無說明書1份1份無自封袋1個1個無注:標準品(S0-S5)濃度依次為:0、20、40、80、160、320pg/mL試劑的準備20×洗滌緩沖液的稀釋:蒸餾水按1:20稀釋,即1份的20×洗滌緩沖液加19份的蒸餾水。洗板方法1.手工洗板:甩盡孔內(nèi)液體,每孔加滿洗滌液,靜置1min后甩盡孔內(nèi)液體,在吸水紙上拍干,如此洗板5次。2.自動洗板機:每孔注入洗液350μL,浸泡1min,洗板5次。操作步驟1.從室溫平衡20min后的鋁箔袋中取出所需板條,剩余板條用自封袋密封放回4℃。2.設置標準品孔和樣本孔,標準品孔各加不同濃度的標準品50μL;3.樣本孔先加待測樣本10μL,再加樣本稀釋液40μL;空白孔不加。4.除空白孔外,標準品孔和樣本孔中每孔加入辣根過氧化物酶(HRP)標記的檢測抗體100μL,用封板膜封住反應孔,37℃水浴鍋或恒溫箱溫育60min。5.棄去液體,吸水紙上拍干,每孔加滿洗滌液,靜置1min,甩去洗滌液,吸水紙上拍干,如此重復洗板5次(也可用洗板機洗板)。6.每孔加入底物A、B各50μL,37℃避光孵育15min。7.每孔加入終止液50μL,15min內(nèi),在450nm波長處測定各孔的OD值。結(jié)果判斷繪制標準曲線:在Excel工作表中,以標準品濃度作橫坐標,對應OD值作縱坐標,繪制出標準品線性回歸曲線,按曲線方程計算各樣本濃度值。試劑盒性能1.準確性:標準品線性回歸與預期濃度相關(guān)系數(shù)R值,大于等于0.9900。2.靈敏度:Zdi檢測濃度小于1.0pg/mL。3.特異性:不與其它可溶性結(jié)構(gòu)類似物交叉反應。4.重復性:板內(nèi)、板間變異系數(shù)均小于15%。5.貯藏:2-8℃,避光防潮保存。6.有效期:6個月免責聲明1.試劑盒僅供研究使用,不得用于臨床實驗或人體實驗,否則所產(chǎn)生的一切后果,由實驗者承擔,本公司概不負責。2.嚴格按照說明書操作,實驗者違反說明書操作,后果由實驗者承擔。FORRESEARCHUSEONLY.NOTFORUSEINDIAGNOSTICPROCEDURES.PorcineInterleukin2(IL-2)ELISAKitinstructionIntendeduseThisIL-2ELISAkitisintendedLaboratoryforResearchuseonlyandisnotforuseindiagnosticortherapeuticprocedures.TheStopSolutionchangesthecolorfrombluetoyellowandtheintensityofthecolorismeasuredat450nmusingaspectrophotometer.InordertomeasuretheconcentrationofIL-2inthesample,thisIL-2ELISAKitincludesasetofcalibrationstandards.ThecalibrationstandardsareassayedatthesametimeasthesamplesandallowtheoperatortoproduceastandardcurveofOpticalDensityversusIL-2concentration.TheconcentrationofIL-2inthesamplesisthendeterminedbycomparingtheO.D.ofthesamplestothestandardcurve.SamplecollectionandstoragesSerum-Useaserumseparatortubeandallowsamplestoclotfor30minutesbeforecentrifugationfor10minutesatapproximately3000×g.Removeserumandassayimmediatelyoraliquotandstoresamplesat-20℃or-80℃.Avoidrepeatedfreeze-thawcyclesPlasma-CollectplasmausingEDTAorheparinasananticoagulant.Centrifugesamplesfor30minutesat3000×gat2-8℃within30minutesofcollection.Storesamplesat-20℃or-80℃.Avoidrepeatedfreeze-thawcycles.Cellculturesupernatesandotherbiologicalfluids-Removeparticulatesbycentrifugationandassayimmediatelyoraliquotandstoresamplesat-20℃or-80℃.Avoidrepeatedfreeze-thawcycles.Note:Thesamples首lebecentrifugateddequatelyandnohemolysisorgranulewasallowed.Materialsrequiredbutnotsupplied1.Standardmicroplatereader(450nm)2.PrecisionpipettesandDisposablepipettetips.3.37℃incubatorPrecautions1.Donotsubstitutereagentsfromonekittoanother.Standard,conjugateandmicroplatesarematchedforoptimalperformance.Useonlythereagentssuppliedbymanufacturer.2.Donotremovemicroplatefromthestoragebaguntilneeded.Unusedstrips首ldbestoredat2-8°Cintheirpouchwiththedesiccantprovided.3.Mixallreagentsbeforeusing.Removeallkitreagentsfromrefrigeratorandallowthemtoreachroomtemperature(20-25°C)MaterialssuppliedName96determinations48determinationsMicroelisastripplate12*8strips12*4stripsStandard0.3ml*6tubes0.3ml*6tubesSampleDiluent6.0ml3.0mlHRP-Conjugatereagent10.0ml5.0ml20XWashsolution25ml15mlChromogenSolutionA6.0ml3.0mlChromogenSolutionB6.0ml3.0mlStopSolution6.0ml3.0mlClosureplatemembrane22Usermanual11Sealedbags11Note:Standard(S0→S5)concentrationwasfollowedby:0,20,40,80,160,320pg/ml.Reagentpreparation20×washsolution:DilutewithDistilledordeionizedwater1:20.Assayprocedure1.Prepareallreagentsbeforestartingassayprocedure.ItisrecommendedthatallStandardsandSamplesbeaddedinduplicatetotheMicroelisaStripplate.2.Addstandard:SetStandardwells,testingsamplewells.Addstandard50μltostandardwell.3.AddSample:Addtestingsample10μlthenaddSampleDiluent40μltotestingsamplewell;Blankwelldoesn’taddanyting.4.Add100μlofHRP-conjugatereagenttoeachwell,coverwithanadhesivestripandincubatefor60minutesat37°C.5.Aspirateeachwellandwash,repeatingtheprocessfourtimesforatotaloffivewashes.Washbyfil領(lǐng)eachwellwithWashSolution(400μl)usingasquirtbottle,manifolddispenserorautowasher.Completeremovalofliquidateachstepisessentialtogoodperformance.Afterthelastwash,removeanyremainingWashSolutionbyaspiratingordecanting.Inverttheplateandblotitagainstcleanpapertowels.6.AddchromogensolutionA50μlandchromogensolutionB50μltoeachwell.Gentlymixandincubatefor15minutesat37°C.Protectfromlight.7.Add50μlStopSolutiontoeachwell.Thecolorinthewells首ldchangefrombluetoyellow.Ifthecolorinthewellsisgreenorthecolorchangedoesnotappearuniform,gentlytaptheplatetoensurethoroughmixing.8.ReadtheOpticalDensity(O.D.)at450nmusingamicrotiterplatereaderwithin15minutes.Calculationofresults1.Thisstandardcurveisusedtodeterminetheamountinanunknownsample.ThestandardcurveisgeneratedbyplottingtheaverageO.D.(450nm)obtainedforeachofthesixstandardconcentrationsonthevertical(Y)axisversusthecorrespondingconcentrationonthehorizontal(X)axis.2.First,calculatethemeanO.D.valueforeachstandardandsample.AllO.D.values,aresubtractedbythemeanvalueofthezerostandardbeforeresultinterpretation.Constructthestandardcurveusinggraphpaperorstatisticalsoftware.3.Todeterminetheamountineachsample,firstlocatetheO.D.valueontheY-axisandextendahorizontallinetothestandardcurve.Atthepointofintersection,drawaverticallinetotheX-axisandreadthecorrespondingconcentration.4.Anyvariationinoperator,pipettingandwashingtechnique,incubationtimeortemperature,andkitagecancausevariationinresult.Eachuser首ldobtaintheirownstandardcurve.5.Thesensitivitybythisassayis1.0pg/ml6.StandardcurveStorage:2-8℃.validity:sixmonths.FORRESEARCHUSEONLY;NOTFORTHERAPEUTICORDIAGNOSTICAPPLICATIONS!PLEASEREADTHROUGHENTIREPROCEDUREBEFOREBEGINNING!

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