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- 详细信息
- 文献和实验
- 技术资料
- 供应商:
瓦兰生物
- 检测范围:
不限
- 检测方法:
酶联免疫法
- 应用:
科研单位
- 适应物种:
不限
- 标记物:
HVEM/TNFRSF14
- 样本:
液体
- 库存:
大量
- 规格:
96T
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 |
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。
- 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。
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
- 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。
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 |
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!
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文献和实验时样本之间干扰。 Q:说明书上写细胞量为 1~5 × 105 ,细胞量多的话对检测结果有没有影响? A:建议细胞量最多不要超过 106个,过量的细胞相当于染料被稀释,影响染色和分离效果。一般 2×105 个细胞足够进行凋亡检测了,通常情况下检测 10,000 个细胞就能得到比较好的结果。 Q:是否可以用 PBS 替代凋亡试剂盒里面的 Binding Buffer? A:不行,Binding Buffer 是必须要加的,Annexin V 与 PS 的结合依赖 Ca2+,Binding
计算出底物消耗速度或产物生成速度,将速度换算为μmol/min即是以国际单位表示的酶活性。 例如: 假设某一样品种的酶活性记为X U/L,取样品量VS(mL)与底物缓冲液Vr(mL)孵育,t min后加入终止液Ve(mL),检测到的净吸光度增加为A,该产物的摩尔消光系数为ε(一般可通过带标准求得),比色皿光径为 b cm。③ 连续监测法计算 酶与底物在特定条件下孵育,每隔一定时间(2-60 s)连续测定酶促反应过程中某一底物或产物的特征信号的变化,从而计算出每分钟的信号变化速率。连续监测法
针对同一指标,生化试剂盒和 ELISA 试剂盒的检测结果趋势是一致的吗?
一、两种方法检测原理 两种方法的基本原理都是朗伯-比尔定律,但是具体形成过程和检测的方法不一样的。 1) 生化试剂盒检测原理 生化试剂盒检测的本质就是某物质化学变化的显色反应,其反应过程可以划分为四个区:延迟区、等速区、过渡区和平衡区,以时间为横坐标、吸光度为纵坐标作图,如下所示: 延迟区:无规律可寻。 等速区:对应的是速率法,一般应用于酶活力的检测。 过渡区:对应的是固定时间法,目的是解决某些化学反应的非特异性问题,提高准确度。 平衡区:对应的是终点法,主要是测定某物质在样本中的含量。 目前
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