）ELISA检测试剂盒使用说明书
检测原理
试剂盒采用双抗体夹心法酶联免疫吸附试验（ELISA）。往预先包被人层粘连蛋白（LN）捕获抗体的包被微孔中，依次加入标本、标准品、HRP标记的检测抗体，经过温育并彻di洗涤。用底物TMB显色，TMB在过氧化物酶的催化下转化成蓝色，并在酸的作用下转化成最终的黄色。颜色的深浅和样品中的人层粘连蛋白（LN）呈正相关。用酶标仪在450nm 波长下测定吸光度（OD 值），计算样品浓度。
洗板方法
1. 手工洗板：甩尽孔内液体，每孔加满洗涤液，静置1min后甩尽孔内液体，在吸水纸上拍干，如此洗板5次。
2. 自动洗板机：每孔注入洗液350μL，浸泡1min，洗板5次。
操作步骤
1. 从室温平衡20min后的铝箔袋中取出所需板条，剩余板条用自封袋密封放回4℃。
2. 设置标准品孔和样本孔，标准品孔各加不同浓度的标准品50μL；
3. 待测样本孔先加待测样本10μL，再加样本稀释液40μL；
4. 随后标准品孔和样本孔中每孔加入辣根过氧化物酶（HRP）标记的检测抗体100μL，用封板膜封住反应孔，37℃水浴锅或恒温箱温育60min。
5. 弃去液体，吸水纸上拍干，每孔加满洗涤液，静置1min，甩去洗涤液，吸水纸上拍干，如此重复洗板5次（也可用洗板机洗板）。
6. 每孔加入底物A、B各50μL，37℃避光孵育15min。
7. 每孔加入终止液50μL，15min内，在450nm波长处测定各孔的OD值。
FOR RESEARCH USE ONLY.
NOT FOR USE IN DIAGNOSTIC PROCEDURES.
Human Laminin (LN) ELISA Kit instruction
Intended use
This LN ELISA kit is intended Laboratory for Research use only ａnd is not for use in diagnostic or therapeutic procedures. The Stop Solution changes the color from blue to yellow ａnd the intensity of the color is measured at 450 nm using a spectrophotometer. In order to measure the concentration of LN in the sample, this LN ELISA Kit includes a set of calibration standards. The calibration standards are assayed at the same time as the samples ａnd allow the operator to produce a standard curve of Optical Density versus LN concentration. The concentration of LN in the samples is then determined by comparing the O.D. of the samples to the standard curve.
Sample collection ａnd storages
Serum - Use a serum separator tube ａnd allow samples to clot for 30 minutes before centrifugation for 10 minutes at approximately 3000×g. Remove serum ａnd assay immediately or aliquot ａnd store samples at -20℃ or -80℃.Avoid repeated freeze-thaw cycles
Plasma - Collect plasma using EDTA or heparin as an anticoagulant. Centrifuge samples for 30 minutes at 3000×g at 2-8℃ within 30 minutes of collection. Store samples at -20℃or -80℃. Avoid repeated freeze-thaw cycles.
Cell culture supernates ａnd other biological fluids - Remove particulates by centrifugation ａnd assay immediately or aliquot ａnd store samples at -20℃or -80℃. Avoid repeated freeze-thaw cycles.
Note: The samples shoule be centrifugated dequately ａnd no hemolysis or granule was allowed.
Materials required but not supplied
1. Standard microplate reader(450nm)
2. Precision pipettes ａnd Disposable pipette tips.
3. 37 ℃ incubator
