Mouse Aβ1-42(Amyloid Beta 1-42) ELISA Kit
小鼠β淀粉样蛋白1-42(Aβ1-42)酶联免疫吸附测定试剂盒
| 规格： | / 96T / 48T / 96T*5 |
| 价格： | / ￥2600 / ￥1800 / ￥11050 |
货号：E-EL-M3010
反应性: 小鼠
检测范围: 3.13~200 pg/mL
灵敏度: 1.88 pg/mL
用途
该试剂盒用于体外定量检测小鼠serum, plasma and other biological fluids中Aβ1-42浓度
检测原理
本试剂盒采用双抗体夹心ELISA法。用抗小鼠Aβ1-42抗体包被于酶标板上，实验时样品或标准品中的小鼠Aβ1-42会与包被抗体结合，游离的成分被洗去。依次加入生物素化的抗小鼠Aβ1-42抗体和辣根过氧化物酶标记的亲和素。抗小鼠Aβ1-42抗体与结合在包被抗体上的小鼠Aβ1-42结合、生物素与亲和素特异性结合而形成免疫复合物，游离的成分被洗去。加入显色底物(TMB)，TMB在辣根过氧化物酶的催化下呈现蓝色，加终止液后变成黄色。用酶标仪在450nm波长处测OD值，Aβ1-42浓度与OD450值之间呈正比，通过绘制标准曲线计算出样品中Aβ1-42的浓度。
| 反应类型 | 夹心法 |
| 规格 | 96T |
| 反应时间 | 3.5h |
| 反应性 | 小鼠 |
| 检测方法 | Colormetric |
| 检测范围 | 3.13—200 pg/mL |
| 灵敏度 | 1.88 pg/mL |
| 样本体积 | 100μL |
| 样本类型 | serum, plasma and other biological fluids |
特异性
可检测样本中的小鼠Aβ1-42，且与其它相关蛋白无明显交叉反应。
重复性
板内，板间变异系数均<10%。
典型数据
由于实验操作条件的不同（如操作者、移液技术、洗板技术和稳定条件等），标准曲线的OD值会有所差异。以下数据和曲线仅供参考，实验者需根据自己的实验建立标准曲线。
| (pg/mL) | O.D | Average | Corrected |
|---|---|---|---|
| 200 | 2.545 2.536 |
2.541 | 2.482 |
| 100 | 1.687 1.61 |
1.649 | 1.59 |
| 50 | 0.981 0.906 |
0.944 | 0.885 |
| 25 | 0.46 0.514 |
0.487 | 0.428 |
| 12.5 | 0.277 0.279 |
0.278 | 0.219 |
| 6.25 | 0.172 0.179 |
0.176 | 0.117 |
| 3.13 | 0.112 0.127 |
0.12 | 0.061 |
| 0 | 0.062 0.056 |
0.059 | -- |
精密度
板内精密度:低浓度样本,中浓度样本和高浓度样本分别在1块板子上检测20次。
板间精密度:低浓度样本,中浓度样本和高浓度样本分别在3块板子上检测20次。
| Intra-assay Precision | Inter-assay Precision | |||||
|---|---|---|---|---|---|---|
| Sample | 1 | 2 | 3 | 1 | 2 | 3 |
| n | 20 | 20 | 20 | 20 | 20 | 20 |
| Mean (pg/mL) |
9.10 | 21.66 | 98.11 | 8.24 | 21.52 | 85.62 |
| Standard
deviation |
0.53 | 1.07 | 4.93 | 0.43 | 1.06 | 3.64 |
| C V (%) | 5.82 | 4.94 | 5.02 | 5.22 | 4.93 | 4.25 |
回收率
分别往5个不同样本中添加已知浓度的目标蛋白，做回收实验，得出回收率范围和平均回收率。
| Sample Type | Range (%) | Average Recovery (%) |
|---|---|---|
| Serum (n=5) | 89-99 | 95 |
| EDTA plasma (n=5) | 85-94 | 90 |
| Cell culture media (n=5) | 97-106 | 100 |
线性
分别往5个样本中添加已知浓度的目标蛋白，做回收实验，得出回收率范围及平均回收率。将5个样本分别稀释2倍，4倍，8倍，16倍做回收实验，得出回收率范围及平均回收率。
| Serum (n=5) | EDTA plasma (n=5) | Cell culture media (n=5) | ||
|---|---|---|---|---|
| 1:2 | Range (%) | 88-102 | 96-106 | 97-109 |
| Average (%) | 94 | 99 | 101 | |
| 1:4 | Range (%) | 98-105 | 95-104 | 87-95 |
| Average (%) | 101 | 100 | 91 | |
| 1:8 | Range (%) | 94-101 | 88-101 | 92-103 |
| Average (%) | 97 | 94 | 95 | |
| 1:16 | Range (%) | 93-107 | 96-106 | 82-98 |
| Average (%) | 100 | 101 | 90 |
试剂盒组成及保存
未拆封的试剂盒可在4℃保存一周；如果一周以后才使用试剂盒，请拆开试剂盒按照下表中的条件分别保存各组分。
| 中文名称 | 英文名称 | 规格 | 保存条件 |
|---|---|---|---|
| ELISA酶标板(可拆卸) | Micro ELISA Plate(Dismountable) | 8 孔×12 条 | -20℃，可存放6个月 |
| 冻干标准品 | Reference Standard | 2 支 | |
| 浓缩生物素化抗体(100×) | Concentrated Biotinylated Detection Ab | 1支 120 μL | |
| 浓缩HRP酶结合物(100×) | Concentrated HRP Conjugate | 1支 120 μL | -20℃(避光)，可存放6个月 |
| 标准品&样品稀释液 | Reference Standard & Sample Diluent | 1瓶 20 mL | 4℃.可存放6个月 |
| 生物素化抗体稀释液 | Biotinylated Detection Ab Diluent | 1瓶 14 mL | |
| 酶结合物稀释液 | HRP Conjugate Diluent | 1瓶 14 mL | |
| 浓缩洗涤液(25×) | Concentrated Wash Buffer (25×) | 1瓶 30 mL | |
| 底物溶液(TMB) | Substrate Reagent | 1瓶 10 mL | 4℃(避光) |
| 反应终止液 | Stop Solution | 1瓶 10 mL | 4℃ |
| 封板覆膜 | Plate Sealer | 5 张 | |
| 产品说明书 | Product Description | 1 份 | |
| 质检报告 | Certificate of Analysis | 1 份 |
说明：所有试剂瓶盖须旋紧以防止蒸发和微生物的污染。
试剂体积以实际发货版说明书为准。相关试剂在分装时会比标签上标明的体积稍多一些，请在使用时量取而非直接倒出。
试验所需自备物品
- 1. 酶标仪(450nm波长滤光片)
- 2. 高精度移液器，EP管及一次性吸头：0.5-10 μL, 2-20 μL, 20-200 μL, 200-1000 μL
- 3. 37℃恒温箱，双蒸水或去离子水
- 4. 吸水纸
操作步骤
|
|
1.对应板孔中加入100μL标准品工作液或样本，37℃孵育90分钟 |
| 2.弃掉板内液体后，立即加入100μL生物素化抗体工作液，37℃孵育60分钟 | |
| 3.弃掉板内液体，洗板3次 | |
| 4.每孔加入100μL HRP酶结合物工作液，37℃孵育30分钟，弃掉板内液体，洗板5次 | |
| 5.每孔加入90μL底物溶液，37℃孵育15分钟 | |
| 6.每孔加入50μL终止液 | |
| 7.立即在450nm波长下读数，处理数据 |
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