供货周期: | 一周 |
品牌: | Cusabio |
规格: | 96T |
货号: | CSB-E08784Rb |
CAS号: | CSB-E08784Rb |
兔纤溶酶-抗纤溶酶复合物(PAP)ELISA试剂盒使用说明书
本试剂盒仅供研究使用
产品名称: 兔纤溶酶抗纤溶酶复合物(PAP)ELISA Kit
英文名称: Rabbit plasmin-antiplasmin complex,PAP ELISA Kit
货号: CSB-E08784Rb
规格: 96T
种属: Rabbit
待测物名称: plasmin-antiplasmin complex,PAP
缩写: PAP
反应时间: 1-5h
所需样本体积: 50-100ul
检测波长: 450 nm
预期应用
ELISA法定量测定兔血清、血浆、细胞培养物上清或其它相关液体中PAP含量。
实验原理
本试剂盒应用双抗体夹心酶标免疫分析法测定标本中PAP水平。用纯化的抗体包被微孔板,制成固相抗体,往包被单抗的微孔中依次加入PAP抗原、生物素化的抗兔PAP抗体、HRP标记的亲和素,经过彻底洗涤后用底物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PAP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。
试剂盒组成及试剂配制
1. 酶联板:一块(96孔)
2. 标准品(冻干品):2瓶,每瓶临用前以样品稀释液稀释至1ml,盖好后静置10分钟以上,然后反复颠倒/搓动以助溶解,其浓度为1000 ug/L,做系列倍比稀释后,分别稀释成1000 ug/L,500 ug/L ,250 ug/L,125 ug/L,62.5 ug/L,31.2 ug/L,15.6 ug/L,其原液直接作为最高标准浓度,样品稀释液直接作为标准浓度0 ug/L,临用前15分钟内配制。
如配制500 ug/L标准品:取0.5ml 1000 ug/L的上述标准品加入含有0.5ml样品稀释液的Eppendorf管中,混匀即可,其余浓度以此类推。
3. 样品稀释液:1×20ml/瓶。
4. 检测稀释液A:1×10ml/瓶。
5. 检测稀释液B:1×10ml/瓶。
6. 检测溶液A:1×120ul/瓶(1:100)临用前以检测稀释液A 1:100稀释,稀释前根据预先计算好的每次实验所需的总量配制(每孔100ul),实际配制时应多配制0.1-0.2ml。如1ul检测溶液A加99ul检测稀释液A的比例配制,轻轻混匀,在使用前一小时内配制。
7. 检测溶液B:1×120ul/瓶(1:100)临用前以检测稀释液B1:100稀释。稀释方法同检测溶液A。
8. 底物溶液:1×10ml/瓶。
9. 浓洗涤液:1×30ml/瓶,使用时每瓶用蒸馏水稀释25倍。
10. 终止液:1×10ml/瓶(2N H2SO4)。
标本的采集及保存
1.细胞培养物上清:请离心后收集上清,并将标本保存于-20℃,且应避免反复冻融。
2.血清:标本请于室温放置2小时或4℃过夜后于1000 x g离心20分钟,取上清即可检测,或将标本放于-20℃保存,但应避免反复冻融。
3.血浆:可用EDTA或肝素作为抗凝剂,标本采集后30分钟内于2 - 8° C 1000 x g离心15分钟,或将标本放于-20℃保存,但应避免反复冻融。
注:标本溶血会影响最后检测结果,因此溶血标本不宜进行此项检测。
操作步骤
各试剂在使用前平衡至室温。
1. 加样:分别设空白孔、标准孔、待测样品孔。除空白孔外,余孔分别加标准溶液或待测样品100ul,注意不要有气泡,轻轻混匀,酶标板加上盖,37℃反应120分钟。
2. 弃去液体,甩干,不用洗涤。
3. 每孔加检测溶液A工作液 100ul,37℃,60分钟。洗板3次,350ul/每孔,甩干。
4. 每孔加检测溶液B工作液 100ul,37℃,60分钟,洗板5次,甩干。
5. 依序每孔加底物溶液90ul,37℃避光显色30分钟(此时肉眼可见标准品的前3-4孔有明显的梯度兰色,后3-4孔梯度不明显)。
6. 依序每孔加终止溶液50ul,终止反应(此时兰色立转黄色)。用酶联仪在450nm波长依序测量各孔的光密度(OD值)。
注:
1. 每次实验留一孔作为空白调零孔,该孔不加任何试剂,只是最后加底物溶液及2NH2SO4。测量时先用此孔调OD值至零。
2.为防止样品蒸发,试验时将反应板放于铺有湿布的密闭盒内。
洗板方法
手工洗板方法:吸去(不可触及板壁)或甩掉酶标板内的液体;在实验台上铺垫几层吸水纸,酶标板朝下用力拍几次;将推荐的洗涤缓冲液至少0.4ml注入孔内,浸泡1-2分钟,根据需要,重复此过程数次。
自动洗板:如果有自动洗板机,应在熟练使用后再用到正式实验过程中。
特异性
本试剂盒可同时检测重组或天然的兔PAP,且与其它相关蛋白无交叉反应。
计算
以标准物的浓度为横坐标(对数坐标),OD值为纵坐标(普通坐标),在半对数坐标纸上绘出标准曲线,根据样品的OD值由标准曲线查出相应的浓度;再乘以稀释倍数;或用标准物的浓度与OD值计算出标准曲线的直线回归方程式,将样品的OD值代入方程式,计算出样品浓度,再乘以稀释倍数,即为样品的实际浓度。
注意事项
1. 洗涤过程非常重要,不充分的洗涤易造成假阳性。
2. 一次加样时间最好控制在5分钟内,如标本数量多,推荐使用排枪加样。
3. 请每次测定的同时做标准曲线,最好做复孔。
4. 如标本中待测物质含量过高,请先稀释后再测定,计算时请最后乘以稀释倍数。
5.在配制标准品、检测溶液工作液时,请以相应的稀释液配制,不能混淆。
6.底物请避光保存。
说明
1. 在储存及孵育过程中避免将试剂暴露在强光中。所有试剂瓶盖须盖紧以防止蒸发和污染,试剂避免受到微生物的污染,因为蛋白水解酶的干扰将导致出现错误的结果。
2. 小心吸取试剂并严格遵守给定的孵育时间和温度。请注意在吸取标本 / 标准品,酶结合物或底物时,第一个孔与最后一个孔加样之间的时间间隔如果太大,将会导致不同的 “预孵育”时间,从而明显地影响到测量值的准确性及重复性。而且,洗涤不充分将影响试验结果。
3. 试剂盒保存:部分试剂保存于-20℃,部分试剂保存于2-8℃,具体以标签上的标示为准。
4. 浓洗涤液会有盐析出,稀释时可在水浴中加温助溶。
5. 刚开启的酶联板孔中可能会含有少许水样物质,此为正常现象,不会对实验结果造成任何影响。
6. 中、英文说明书可能会有不一致之处,请以英文说明书为准。
7. 所有的样品都应管理好,按照规定的程序处理样品和检测装置。
8. 有效期:6个月
精密度: Intra-assay Precision (Precision within an assay): CV%<8%
Three samples of known concentration were tested twenty times on one plate to assess.
Inter-assay Precision (Precision between assays): CV%<10%
Three samples of known concentration were tested in twenty assays to assess.
样本搜集及储存: Serum: Use a serum separator tube (SST) and allow samples to clot for two hours at room temperature or overnight at 4°C before centrifugation for 15 minutes at 1000 ×g. Remove serum and assay immediately or aliquot and store samples at -20°C or -80°C. Avoid repeated freeze-thaw cycles.
Plasma: Collect plasma using EDTA, or heparin as an anticoagulant. Centrifuge for 15 minutes at 1000 ×g at 2-8°C within 30 minutes of collection. Assay immediately or aliquot and store samples at -20°C or -80°C. Avoid repeated freeze-thaw cycles.
检测步骤: Bring all reagents and samples to room temperature before use. Centrifuge the sample again after thawing before the assay. It is recommended that all samples and standards be assayed in duplicate.
1. Prepare all reagents, working standards, and samples as directed in the previous sections.
2. Refer to the Assay Layout Sheet to determine the number of wells to be used and put any remaining wells and the desiccant back into the pouch and seal the ziploc, store unused wells at 4°C.
3. Add 100μl of standard and sample per well. Cover with the adhesive strip provided. Incubate for 2 hours at 37°C. A plate layout is provided to record standards and samples assayed.
4. Remove the liquid of each well, don't wash.
5. Add 100μl of Biotin-antibody (1x) to each well. Cover with a new adhesive strip. Incubate for 1 hour at 37°C. (Biotin-antibody (1x) may appear cloudy. Warm up to room temperature and mix gently until solution appears uniform.)
6. Aspirate each well and wash, repeating the process two times for a total of three washes. Wash by filling each well with Wash Buffer (200μl) using a squirt bottle, multi-channel pipette, manifold dispenser, or autowasher, and let it stand for 2 minutes, complete removal of liquid at each step is essential to good performance. After the last wash, remove any remaining wash Buffer by aspirating ordecanting. Invert the plate and blot it against clean paper towels.
7. Add 100μl of HRP-avidin (1x) to each well. Cover the microtiter plate with a new adhesive strip. Incubate for 1 hour at 37°C.
8. Repeat the aspiration/wash process for five times as in step 6.
9. Add 90μl of TMB Substrate to each well. Incubate for 15-30 minutes at 37°C. Protect from light.
10. Add 50μl of Stop Solution to each well, gently tap the plate to ensure thorough mixing.
11. Determine the optical density of each well within 5 minutes, using a microplate reader set to 450 nm. If wavelength correction is available, set to 540 nm or 570 nm. Subtract readings at 540 nm or 570 nm from the readings at 450 nm. This subtraction will correct for optical imperfections in the plate. Readings made directly at 450 nm without correction may be higher and less accurate.
结果计算: Using the professional soft "Curve Expert 1.3" to make a standard curve is recommended, which can be downloaded from our web.
Average the duplicate readings for each standard and sample and subtract the average zero standard optical density.
Create a standard curve by reducing the data using computer software capable of generating a four parameter logistic (4-PL) curve-fit. As an alternative, construct a standard curve by plotting the mean absorbance for each standard on the x-axis against the concentration on the y-axis and draw a best fit curve through the points on the graph. The data may be linearized by plotting the log of the PAP concentrations versus the log of the O.D. and the best fit line can be determined by regression analysis. This procedure will produce an adequate but less precise fit of the data.
If samples have been diluted, the concentration read from the standard curve must be multiplied by the dilution factor.
相关产品:
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