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小鼠白介素16(IL-16)ELISA試劑盒廠家
點擊次數:12發(fā)布時間:2016/8/3 21:27:58

更新日期:2016/8/3 21:27:58
所 在 地:中國大陸
產品型號:
優(yōu)質供應
詳細內容
ELISA 檢測的目的是為實驗提供準確可靠的定量分析實驗依據。為了保證實驗數據的可靠性,在實驗過程中必須堅持全面質量控制和全過程質量控制。在收集標本前都必須有一個完整的計劃。齊一生物銷售:021-6034 8496;181214 53965;173021 04490
注意事項:
◆ 每個標本量收集體積= 100ul × 檢測種類,如要做復孔,標本量收集體積= 100ul × 檢測種類×2 。
◆ 對于作某一個具體指標來說,先用一系列稀釋度作一批標本測定,得出對實驗有意義的一個稀釋度(即測定劑量反應曲線),然后用一個*適稀釋度測定即可。
◆ 收集標本前必須清楚要檢測的成份是否足夠穩(wěn)定。對收集后當天進行檢測的標本,儲存在4℃?zhèn)溆,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。部分激素類標本需添加抑肽酶。
◆ 血清標本采集時,應注意避免溶血,紅細胞溶解時會釋放出具有過氧化物酶活性的物質,以 HRP為標記的 ELISA 測定中,溶血標本可能會增加非特異性顯色。
【小鼠白介素16(IL-16)ELISA試劑盒廠家】◆ 為了保證尿液檢測結果的準確性,必須正確收集尿液標本和保存。盛尿容器要清潔干燥。使用一次性的容器(如塑料尿杯),避免因用藥并清洗不干凈而造成的污染,影響檢測結果。尿液標本必須新鮮,留取后,應及時檢測或保存,以免細菌繁殖。因在室溫中久置后(尤其是夏季)尿中磷酸鹽等可析出結晶而干擾檢測。
◆ 標本宜在新鮮時檢測。如有細菌污染,菌體中可能含有內源性 HRP,也會產生假陽性反應。保存過久可發(fā)生聚合在 ELISA中可使本底加深。
◆ 凍結標本融解后,蛋白質局部濃縮,分布不均,應充分混勻宜輕緩,避免氣泡,可上下顛倒混和,不要在混勻器上強烈振蕩。
◆ 混濁或有沉淀的標本應先離心或過濾,澄清后再檢測。
◆ 反復凍融會使蛋白效價降低,所以待測標本如需保存作多次檢測,宜少量分裝冰存。也可加入適當防腐劑。
◆ 如果您在實驗中遇到任何特殊問題,敬請咨詢 021-60348496標本類型
ELISA常見的標本一般包括:
◆ 液體類標本:包括血清、血漿、尿液、胸腹水、腦脊液、細胞培養(yǎng)上清等。
◆ 培養(yǎng)細胞
◆ 組織標本
這些標本收集的時間、方法和保存都有一定的要求。
【小鼠白介素16(IL-16)ELISA試劑盒廠家】標本的保存
一般說來,在 5 天內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。標本的處理 可用作 ELISA 測定的標本十分廣泛,體液(如血清)、分泌物(唾液)和排泄物(如尿液)、細胞培養(yǎng)上清、細胞、組織等均可作標本以測定其中某種成份。有些標本可直接進行測定,有些則需經預處理。
◆ 血清:
室溫血液自然凝固 10-20 分鐘后,離心 20 分鐘左右( 2000-3000 轉 / 分)。收集上清。如有沉淀形成,應再次離心。
◆ 血漿:
應根據試劑盒的要求選擇 EDTA 、檸檬酸鈉或肝素作為抗凝劑,加入 10 %( v/v )抗凝劑 ( 0.1M 檸檬酸鈉或 1% heparin 或 2.0%EDTA.Na2) 混合 10-20 分鐘后,離心 20 分鐘左右( 2000-3000 轉 / 分)。仔細收集上清如有沉淀形 成,應再次離心。
【小鼠白介素16(IL-16)ELISA試劑盒廠家】◆ 尿液、胸腹水、腦脊液:
用無菌管收集。離心 20 分鐘左右( 2000-3000 轉 / 分)。仔細收集上清。如有沉淀形成,應再次離心。
◆ 細胞培養(yǎng)上清:
檢測分泌性的成份時,用無菌管收集。離心 20 分鐘左右( 2000-3000 轉 / 分)。仔細收集上清。檢測細胞內的 成份時,用 PBS ( PH7.2-7.4 )稀釋細胞懸液,細胞濃度達到 100 萬 /ml 左右。通過反復凍融,以使細胞破壞并放出細胞內成份。離心 20 分鐘左右( 2000-3000 轉 / 分)。仔細收集上清。保存過程中如有沉淀形成,應再次離心。
◆ 細胞:
檢測細胞的成份時,對于貼壁細胞,去除培養(yǎng)液,用PBS、生理鹽水或無血清培養(yǎng)液洗一遍。加入適量裂解液。用槍吹打數下,使裂解液和細胞充分接觸。通常裂解液接觸細胞10 秒后,細胞就會被裂解。對于懸浮細胞,離心收集細胞,用PBS、生理鹽水或無血清培養(yǎng)液洗一遍.加入適量裂解液, 用槍吹打把細胞吹散。用手指輕彈以充分裂解細胞。充分裂解后應沒有明顯的細胞沉淀。如果細胞量較多,必需分裝然后再裂解。充分裂解后,10000-14000g離心3-5 分鐘,取上
清,即可進行后續(xù)操作。
【小鼠白介素16(IL-16)ELISA試劑盒廠家】◆ 組織標本:
切割標本后,稱取重量。加入一定量的 PBS或組織蛋白萃取試劑,緩沖液中可加入蛋白酶抑制劑。用手工或勻漿器將標本勻漿充分。離心 20 分鐘左右( 2000-3000 轉 / 分)。仔細收集上清置于 -20 度或 - 70 度保存,如有必要,可以將樣品濃縮干燥。分裝后一份待檢測,其余冷凍備用。齊一生物銷售:021-6034 8496;181214 53965;173021 04490
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