小鼠酸性粒細胞趨化因子(eotaxin)ELISA試劑盒子科生物研發(fā)生產(chǎn),深圳子科生物ELISA試劑盒優(yōu)質(zhì)供應商,擁有10年的研發(fā)和生產(chǎn)經(jīng)驗,擁有*的儀器設備,專業(yè)的技術人員和*的實驗技術,目前已經(jīng)建立強大的實驗技術服務平臺,品牌設立為:ZIKER 。
小鼠酸性粒細胞趨化因子(eotaxin)ELISA試劑盒●品牌:子科生物ZIKER,美國R&D,美國immonoway,美國sciencell,德國IBL
●產(chǎn)品說明書:可添加在線客服索要原版詳細操作說明書,或者留下您的,我們會將產(chǎn)品詳細說明書發(fā)送至您的
●價格:電議,或咨詢在線客服,或者以郵件形式發(fā)到我司zikerbio進行詢價,我們將在*時間回復您!深圳子科生物提供大量品牌進口原裝,分裝,以及穩(wěn)定性強的國產(chǎn)ELISA試劑盒,性價比*。咨詢!
深圳子科生物所有ELISA試劑盒均需要經(jīng)過質(zhì)檢合格后才允許出庫,能有效控制產(chǎn)品質(zhì)量,廣大客戶可以放心購買。且子科生物所有ELISA試劑盒里的抗體均采用進口品牌抗體,能有效保證產(chǎn)品的高效靈敏性,且我公司研發(fā)人員有豐富的研發(fā)經(jīng)驗,*的儀器設備,*的實驗技術,讓我公司產(chǎn)品優(yōu)于同等廠家系列產(chǎn)品,是您的*廠家。
ELISA試劑盒檢測方法:雙抗體夾心法、雙抗原夾心法、間接法測抗體、雙位點一步法、 競爭法 、捕獲法、ABS-ELISA方法,我們子科生物主要采用雙抗體夾心法。詳細可以咨詢我們銷售人員。
小鼠酸性粒細胞趨化因子(eotaxin)ELISA試劑盒標本的保存
一般說來,在 5 天內(nèi)測定的標本可放置于 4℃,超過一周測定的需低溫凍存。 對收集后當天進行檢測的標本,儲存在 4 ℃ 備用,如有特殊原因需要周期收集標本, 將標本及時分裝后放在 -20 ℃ 或 -70 ℃ 條件下保存。避免反復凍融。 標本 2 -8 ℃ 可保存 48 小時, -20 ℃ 可保存 1 個月。 -70 度可保存 6 個月。部分標 本也可加入適當防腐劑,激素類標本需添加抑肽酶。
在它的研究、生產(chǎn)及使用中常常會碰到非特異性問題,子科生物技術部根據(jù)多年研發(fā)和臨床經(jīng)驗總結如下:
1、試劑盒特異性因素
1)固相載體的選擇。ELISA中常用的固相載體有微量滴定板、小珠和小試管三種,以微量滴定板zui為常見[1]。它具有良好的吸附性能,孔底透明度高,空白值低,各板之間、同一板各孔之間性能相近。聚苯乙烯ELISA板由于原料的不同和制作工藝的差別,各產(chǎn)品的質(zhì)量差異很大。因此,在選擇試劑盒同時要對其使用的微孔板型號進行認證,評估。
2)包被物的純度。在酶聯(lián)免疫測定尤其是間接ELISA中,試劑的特異性取決于使用抗原的純度。目前由于技術條件的限制,包被用抗原或抗體的純度不可能達到100%,所以有些非特異性顯色不可避免,只能盡可能提高純度,提高特異性。目前使用的包被抗原一般為合成多肽抗原。
3)包被抗體的效價。具有高親和力和高特異性的包被抗體,是決定試劑特異性的重要方面。
4 )封閉。是ELISA中重要的一步,目的是封閉固相載體表面尚未被所占據(jù)的空隙[2],減少后續(xù)步驟中非特異性蛋白的干擾。
2、操作過程中的問題造成假陽性
1)加樣
對于間接ELISA標本一般都要進行稀釋,如果加樣不準就會造成誤差,尤其當稀釋倍數(shù)大時,很小的誤差,會導致較大的相對誤差,使陰性(或弱陽性)標本呈陽性(或陰性)。加樣時應將所加物加在ELISA板孔的底部,避免加在孔壁上部,并注意不可濺出,不可產(chǎn)生氣泡。目前,大部分血站都已使用全自動酶免加樣系統(tǒng)處理標本,可較好地避免以上誤差。
2)洗滌
在ELISA中正確的洗滌是保證得到可重復結果的關健一步,應引起操作者重視。無論是手工操作還是機器操作,得出不正確的結果常與不正確的洗滌有關,ELISA就是靠洗滌來達到分離游離和結合的酶標記物的目的。通過洗滌以消除殘留在板孔中沒能與固體抗原或抗體結合的物質(zhì),以及在反應過程中非特異性吸附于固相載體的干擾物質(zhì)。
3) 溫育
每種試劑都有其佳反應模式,其中溫度和溫育時間控制是重要因素。因孵育溫度高,反應時間長,會造成整板本底高,陽性率高。溫育一般用濕盒或水浴,反應板不宜疊放,以保證各板溫度都能迅速平衡,為避免蒸發(fā),板上應加蓋。
4)酶標儀判讀
作為記錄測定結果的儀器,酶標儀的性能穩(wěn)定與否,決定結果的可靠度。首先酶標儀應定期進行保養(yǎng),對濾光片要定期校正;其次酶標儀波長設置要正確,使用雙波長,一個檢測波長,一個參比波長,以消除微孔板底部劃痕、不平、指印或液面高度差異造成的光干擾。此外,在用酶標儀讀數(shù)時先擦試微孔板底部并壓平板條。由于各種酶標儀性能有所不同。
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