小鼠二肽基肽酶Ⅳ ( DPPⅣ ) ELISA Kit价格

样本：液体

标记物：DPPⅣ

适应物种：不限

应用：科研单位

检测方法：酶联免疫法

检测限：不限

供应商：瓦兰生物

库存：大量

规格：96T

小鼠二肽基肽酶Ⅳ(DPPⅣ) ELISA Kit

试剂盒组成

名称	96孔配置	48孔配置	备注
微孔酶标板	12孔×8条	12孔×4条	无
标准品	0.3mL	0.3mL	无
样本稀释液	6mL	3mL	无
检测抗体-HRP	10mL	5mL	无
20×洗涤缓冲液	25mL	15mL	按说明书进行稀释
底物A	6mL	3mL	无
底物B	6mL	3mL	无
终止液	6mL	3mL	无
封板膜	2张	2张	无
说明书	1份	1份	无
自封袋	1个	1个	无

注：标准品浓度依次为：8、4、2、1、0.5、0 ng/ml.
试剂的准备
20×洗涤缓冲液的稀释：蒸馏水按1：20稀释，即1份的20×洗涤缓冲液加19份的蒸馏水。
洗板方法

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。
自动洗板机：每孔注入洗液350μL，浸泡1min，洗板5次。

操作步骤

从室温平衡60min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℃。
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；
待测样本孔先加待测样本10μL，再加样本稀释液40μL；
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。
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）。
每孔加入底物A、B各50μL，37℃避光孵育15min。
每孔加入终止液50μL，15min内，在450nm波长处测定各孔的OD值。

结果判断
绘制标准曲线：在Excel工作表中，以标准品浓度作横坐标，对应OD值作纵坐标，绘制出标准品线性回归曲线，按曲线方程计算各样本浓度值。

试剂盒性能

准确性：标准品线性回归与预期浓度相关系数R值，大于等于0.9900。
灵敏度：最低检测浓度小于0.1 ng/ml。
特异性：不与其它可溶性结构类似物交叉反应。
重复性：板内变异系数小于10%、板间变异系数小于15%。
贮藏：2-8℃，避光防潮保存。
有效期：6个月

免责声明

试剂盒仅供研究使用，不得用于临床实验或人体实验，否则所产生的一切后果，由实验者承担，本公司概不负责。
严格按照说明书操作，实验者违反说明书操作，后果由实验者承担。

ELISA质量保证是一个复杂的过程，许多重要的环节都影响到检测的质量一、方法学的影响 ELISA测定模式包括以下几种：双抗体夹心法、间接法、双抗原夹心法、IgM抗体捕捉法、竞争抑制法，其中竞争抑制法（HBeAb,HBcAb等采用）因受操作时差所引起的不公平竞争等因素的影响，结果重复性较差，质量较难控制。二、试剂因素不同批次的ELISA试剂在制作过程中很难保证质量完全一致，即使是通过批批检的项目其检测结果也存在差异，因此必须选择和订购长批号的试剂，并保证保存条件。严格执行这一标准可以避免因试剂批号改变而重新建立质控体系及重新评估试剂的复杂过程，并且能够保证结果的稳定性；对于效期短、使用率低的试剂，应当小量分装，每次使用则取分装部分即可，避免反复冻融造成试剂的失效。三、样本因素标本干扰因素包括内源性干扰因素和外源性干扰因素，前者包括类风湿因子、补体、异嗜性抗体、自身抗体、溶菌酶等，后者包括标本溶血、标本被细菌污染、标本贮存时间过长、标本凝固不全、冷冻标本的反复冻融等。四、操作因素对ELISA结果的影响 ELISA操作步骤复杂，操作不当将引起较大的误差。以下叙述各个步骤中的影响因素。 1.加样 2.温育 3.洗涤 4.显色 5.比色五、灰区的设置通常情况下，ELISA定性实验以“阳性”和“阴性”来报告结果，两者间有一条分界线被称为“阳性判断值”（cut-off value，CO值），这是定性免疫测定结果报告的依据。六、标本复查 ELISA手工检测过程复杂，影响因素较多，即使室内质控在控，也可能因孔间差异而造成结果的差异，因此加大复查力度是保证结果准确性的可靠方法，比如对HBsAg、HBeAg、HCV-Ab、HIV-Ab、TP-Ab等项目的可疑、弱阳性标本及少见模式的检测结果进行复查。七、结果判断和报告常用下列几种方法表示结果： 1.定性测定 2.半定量测定结果一般以滴度表示。 3.定量测定即用已知量的标准品作一系列稀释后进行ELISA测定，绘制标准曲线，结果以绝对量或单位表示。在ELISA定量检测中每一块反应板都必须绘制相应的标准曲线。 4.结果报告每个试剂盒操作是不同的，请按说明书操作。具体事项请来电咨询！

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 should be centrifugated adequately 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
Precautions
1. Do not substitute reagents from one kit to another. Standard, conjugate and microplates are matched for optimal performance. Use only the reagents supplied by manufacturer.
2. Do not remove microplate from the storage bag until needed. Unused strips should be stored at 2-8°C in their pouch with the desiccant provided.
3. Mix all reagents before using.
Remove all kit reagents from refrigerator and allow them to reach room temperature ( 20-25°C)
Materials supplied

Name	96 determinations	48 determinations
Microelisa stripplate	12*8strips	12*4strips
Standard	0.3ml	0.3ml
Sample diluent	6.0ml	3.0ml
HRP-Conjugate reagent	10.0ml	5.0ml
20X Wash solution	25ml	15ml
Chromogen Solution A	6.0ml	3.0ml
Chromogen Solution B	6.0ml	3.0ml
Stop Solution	6.0ml	3.0ml
Closure plate membrane	2	2
User manual	1	1
Sealed bags	1	1

Note: Standard concentration was followed by:
8、4、2、1、0.5、0 ng/ml.
Reagent preparation
20×wash solution:Dilute with Distilled or deionized water 1:20.
Assay procedure
1. Prepare all reagents before starting assay procedure. It is recommended that all Standards and Samples be added in duplicate to the Microelisa Stripplate.
2. Add standard: Set Standard wells, testing sample wells. Add standard 50μl to standard well.
3. Add Sample: Add testing sample 10μl Then add sample diluent 40μl to testing sample well; Blank well doesn’t add anyting.
4. Add 100μl of HRP-conjugate reagent to each well, cover with an adhesive strip and incubate for 60 minutes at 37°C.
5. Aspirate each well and wash, repeating the process four times for a total of five washes. Wash by filling each well with Wash Solution (400μl) using a squirt bottle, manifold dispenser or autowasher. Complete removal of liquid at each step is essential to good performance. After the last wash, remove any remaining Wash Solution by aspirating or decanting. Invert the plate and blot it against clean paper towels.
6. Add chromogen solution A 50μl and chromogen solution B 50μl to each well. Gently mix and incubate for 15 minutes at 37°C. Protect from light.
7. Add 50μl Stop Solution to each well. The color in the wells should change from blue to yellow. If the color in the wells is green or the color change does not

appear uniform, gently tap the plate to ensure thorough mixing.
8. Read the Optical Density (O.D.) at 450 nm using a microtiter plate reader within 15 minutes.
Calculation of results

This standard curve is used to determine the amount in an unknown sample. The standard curve is generated by plotting the average O.D. (450 nm) obtained for each of the six standard concentrations on the vertical (Y) axis versus the corresponding concentration on the horizontal (X) axis.
First, calculate the mean O.D. value for each standard and sample. All O.D. values, are subtracted by the mean value of the zero standard before result interpretation. Construct the standard curve using graph paper or statistical software.
To determine the amount in each sample, first locate the O.D. value on the Y-axis and extend a horizontal line to the standard curve. At the point of intersection, draw a vertical line to the X-axis and read the corresponding concentration.
Any variation in operator, pipetting and washing technique, incubation time or temperature, and kit age can cause variation in result. Each user should obtain their own standard curve.
The sensitivity by this assay is 0.1 ng/ml.
Standard curve

Storage： 2-8℃.
validity： six months.

FOR RESEARCH USE ONLY; NOT FOR THERAPEUTIC OR DIAGNOSTIC APPLICATIONS! PLEASE READ THROUGH ENTIRE PROCEDURE BEFORE BEGINNING!