本试剂盒只能用于科学研究，不得用于医学诊断

苜蓿（Alfalfa）花叶病毒（AMV）ELISA检测试剂盒

使用说明书

检测原理

试剂盒采用双抗体一步夹心法酶联免疫吸附试验（ELISA）。往预先包被花叶病毒（AMV）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，经过温育并彻底洗涤。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。用酶标仪在450nm波长下测定吸光度（OD 值），与CUTOFF值相比较，从而判定标本中花叶病毒（AMV）的存在与否。

样品收集、处理及保存方法

1.  样本不能含叠氮钠（NaN3），因为叠氮钠（NaN3）是辣根过氧化物酶（HRP）的抑制剂。

2.  标本采集后尽早进行提取，提取按相关文献进行。

3.  苜蓿萃取液或其它相关样本：请1000 x g离心20分钟，取上清即可检测。

4.  保存：如果样本收集后不及时检测，请按一次用量分装，冻存于-20℃，避免反复冻融，在室温下解冻并确保样品均匀地充分解冻。

自备物品

1.    酶标仪（450nm）

2.    高精度加样器及枪头：0.5-10uL、2-20uL、20-200uL、200-1000uL

3.    37℃恒温箱

操作注意事项

1.  试剂盒保存在2-8℃，使用前室温平衡20分钟。从冰箱取出的浓缩洗涤液会有结晶，这属于正常现象，水浴加热使结晶完全溶解后再使用。

2.  实验中不用的板条应立即放回自封袋中，密封（低温干燥）保存。

3.  预处理后的样本请按照操作步骤用样本稀释液适当稀释以达到试剂盒的的最佳检测效果。

4.严格按照说明书中标明的时间、加液量及顺序进行温育操作。

5.所有液体组分使用前充分摇匀。

试剂盒组成

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

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.  样本孔先加待测样本10μL，再加样本稀释液40μL；空白孔不加。

4.  除空白孔外，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。

结果判断

 1.  试验有效性：阳性对照孔OD值平均值≥1.00；

                阴性对照孔OD值平均值≤0.15。

2.  临界值（Cut off）计算：临界值=阴性对照孔平均值+0.15

3.  阴性判断：样品OD值＜临界值（Cut off），样品为阴性

4.  阳性判断：样品OD值＞临界值（Cut off），样品为阳性

试剂盒性能

1.  准确性：阳性对照孔OD值平均值≥1.00；阴性对照孔OD值平均值≤0.15，说明试验结果有效。

2.  特异性：不与其它可溶性结构类似物交叉反应。

3.  重复性：板内、板间变异系数均小于15%。

4.  贮藏：2-8℃，避光防潮保存。

5. 有效期：6个月

免责声明

1.   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。

2.   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。

FOR RESEARCH USE ONLY.

NOT FOR USE IN DIAGNOSTIC PROCEDURES.

Alfalfa Mosaic Virus (AMV) ELISA Kit instruction

Intended use

This AMV 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 AMV in the sample, this AMV 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 cutoff value. The existence or not of AMV in the samples is then determined by comparing the O.D. of the samples to the CUT OFF.

Sample collection and storages

1.      Can’t detect the samples which contain NaN3, because NaN3 inhibits HRP activity of the horseradish peroxidase.

2.  Extract as soon as possible after Specimen collection, Extracted according to the relevant literature.

Cell culture supernates and Alfalfa exact fluids - Remove particulates by centrifugation and assay immediately or aliquot and store samples at -20°C or -80°C. Avoid repeated freeze-thaw.

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

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.

Determine the result

1.  Test validity: the average of Positive control well≥1.00; the average of Negative control well ≤0.15.

2.  Calculate Critical (CUT OFF): Critical= the average of Negative control well + 0.15.

    Negative Result: sample OD< Calculate Critical (CUT OFF) is Negative.

    Positive Result: sample OD≥ Calculate Critical (CUT OFF) is Positive.

Storage and validity

Storage：  2-8℃.

validity： six months.