人*(Cortisol)ELISA试剂盒说明书
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313次人*(Cortisol)ELISA试剂盒说明书{Human Cortisol ELISA Kit }
l Storage: 2-8℃.
Principle
This ELISA kit uses Sandwich-ELISA as the method. The Microelisa stripplate provided in this kit has been pre-coated with an antibody specific to Cortisol. Standards or samples are added to the appropriate Microelisa stripplate wells and combined to the specific antibody. Then a Horseradish Peroxidase (HRP)- conjugated antibody specific for Cortisol is added to each Microelisa stripplate well and incubated. Free components are washed away. The TMB substrate solution is added to each well. Only those wells that contain Cortisol and HRP conjugated Cortisol antibody will appear blue in color and then turn yellow after the addition of the stop solution. The optical density (OD) is measured spectrophotometrically at a wavelength of 450 nm. The OD value is proportional to the concentration of Cortisol. You can calculate the concentration of Cortisol in the samples by comparing the OD of the samples to the standard curve.
Materials provided with the kit
Materials provided with the kit | 96 determinations | Storage | |
1 | User manual | 1 | R.T. |
2 | Closure plate membrane | 2 | R.T. |
3 | Sealed bags | 1 | R.T. |
4 | Microelisa stripplate | 1 | 2-8℃ |
5 | Standard:225 ng/ml | 0.5ml×1 bottle | 2-8℃ |
6 | Standard diluent | 1.5ml×1 bottle | 2-8℃ |
7 | HRP-Conjugate reagent | 6ml×1 bottle | 2-8℃ |
8 | Sample diluent | 6ml×1 bottle | 2-8℃ |
9 | Chromogen Solution A | 6ml×1 bottle | 2-8℃ |
10 | Chromogen Solution B | 6ml×1 bottle | 2-8℃ |
11 | Stop Solution | 6ml×1 bottle | 2-8℃ |
12 | wash solution | 20ml (30X)×1bottle | 2-8℃ |
Sample preparation
1. Serum preparation
After collection of the whole blood, allow the blood to clot by leaving it undisturbed at room temperature. This usually takes 10-20 minutes. Remove the clot by centrifuging at 2,000-3,000 rpm for 20 minutes. If precipitates appear during reservation, the sample should be centrifugated again.
2. Plasma preparation
Collect the whole blood into tubes with anticoagulant (EDTA or citrate). After incubated at room temperature for 10-20 minutes, tubes are centrifugated for 20 min at 2,000-3,000 rpm. Collect the supernatant carefully as plasma samples. If precipitates appear during reservation, the sample should be centrifugated again.
3. Urine samples
Collect urine into aseptic tubes. Collect the supernatant carefully after centrifuging for 20 min at 2,000-3,000 rpm. If precipitates appear during reservation, the sample should be centrifugated again. The preparation procedure of cerebrospinal fluid and pleuroperitoneal fluid is the same as that of urine sample.
4. Cell samples人*(Cortisol)ELISA试剂盒说明书
If you want to detect the secretions of cells, collect culture supernatant into aseptic tubes. Collect the supernatant carefully after centrifuging for 20 min at 2,000-3,000 rpm. If you want to detect intracellular components, dilute the cells to 1X106/ml with PBS (pH 7.2-7.4). The cells were destroyed to release intracellular components by repeated freezing and thawing. Collect the supernatant carefully after centrifuging for 20 min at 2,000-3,000 rpm. If precipitates appear during reservation, the sample should be centrifugated again.
5. Tissue samples
Tissue samples are cut, weighed, frozen in liquid nitrogen and stored at -80℃ for future use. The tissue samples were homogenized after adding PBS (pH 7.4). Samples should be operated at 4℃. Collect the supernatant carefully after centrifuging for 20 min at 2,000-3,000 rpm. Aliquot the supernatant for ELISA assay and future use.
Notes:
Procedure
Ten wells are set for standards in a Microelisa stripplate. In Well 1 and Well 2, 100μl Standard solution and 50μl Standard Dilution buffer are added and mixed well. In Well 3 and Well 4, 100μl solution from Well 1 and Well 2 are added respectively. Then 50μl Standard Dilution buffer are added and mixed well. 50μl solution is discarded from Well 3 and Well 4. In Well 5 and Well 6, 50μl solution from Well 3 and Well 4 are added respectively. Then 50μl Standard Dilution buffer are added and mixed well. In Well 7 and Well 8, 50μl solution from Well 5 and Well 6 are added respectively. Then 50μl Standard Dilution buffer are added and mixed well. In Well 9 and Well 10, 50μl solution from Well 7 and Well 8 are added respectively. Then 50μl Standard Dilution buffer are added and mixed well. 50μl solution is discarded from Well 9 and Well 10. After dilution, the total volume in all the wells are 50μl and the concentrations are 150ng/ml 100 ng/ml, 50 ng/ml, 25 ng/ml and 12.5 ng/ml, respectively.
2. In the Microelisa stripplate, leave a well empty as blank control. In sample wells, 40μl Sample dilution buffer and 10μl sample are added (dilution factor is 5). Samples should be loaded onto the bottom without touching the well wall. Mix well with gentle shaking.
3. Incubation: incubate 30 min at 37℃ after sealed with Closure plate membrane.
4. Dilution: dilute the concentrated washing buffer with distilled water (30 times for 96T and 20 times for 48T).
5. Washing: carefully peel off Closure plate membrane, aspirate and refill with the wash solution. Discard the wash solution after resting for 30 seconds. Repeat the washing procedure for 5 times.
6. Add 50 μl HRP-Conjugate reagent to each well except the blank control well.
7. Incubation as described in Step 3.
8. Washing as described in Step 5.人*(Cortisol)ELISA试剂盒说明书
9. Coloring: Add 50 μl Chromogen Solution A and 50 μl Chromogen Solution B to each well, mix with gently shaking and incubate at 37℃ for 15 minutes. Please avoid light during coloring.
10. Termination: add 50 μl stop solution to each well to terminate the reaction. The color in the well should change from blue to yellow.
11. Read absorbance O.D. at 450nm using a Microtiter Plate Reader. The OD value of the blank control well is set as zero. Assay should be carried out within 15 minutes after adding stop solution.
Notes:
Calculation of Results
Kit performance
1. Correlation coefficient (R) of linear regression of the samples is more than 0.92
2. The difference in intra-assay and inter-assay is less than 9% and 15% respectively.
Assay range
3 ng/ml -180 ng/ml
人*(Cortisol)酶联免疫分析(ELISA)
试剂盒使用说明书
l 本试剂盒仅供科研使用。
l 本试剂盒用于体外定量检测人血清、血浆、组织、细胞上清及相关液体样本中*(Cortisol)的含量。
l 有效期:6个月
l 保存条件:2-8℃
实验原理
本试剂盒应用双抗体夹心法测定标本中人*(Cortisol)水平。用纯化的人*(Cortisol)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*(Cortisol),再与HRP标记的*(Cortisol)抗体结合,形成抗体-抗原-酶标抗体复合物,经过*洗涤后加底物TMB显色。TMB在HRP酶的催化下转化成蓝色,并在酸的作用下转化成zui终的黄色。颜色的深浅和样品中的*(Cortisol)呈正相关。用酶标仪在450nm波长下测定吸光度(OD值),通过标准曲线计算样品中人*(Cortisol)浓度。
试剂盒组成
试剂盒组成 | 96孔配置 | 保存 | |
1 | 说明书 | 1份 | R.T. |
2 | 封板膜 | 2片(96) | R.T. |
3 | 密封袋 | 1个 | R.T. |
4 | 酶标包被板 | 1×96 | 2-8℃保存 |
5 | 标准品:225ng/ml | 0.5ml×1瓶 | 2-8℃保存 |
6 | 标准品稀释液 | 1.5ml×1瓶 | 2-8℃保存 |
7 | 酶标试剂 | 6 ml×1瓶 | 2-8℃保存 |
8 | 样品稀释液 | 6 ml×1瓶 | 2-8℃保存 |
9 | 显色剂A液 | 6 ml×1瓶 | 2-8℃保存 |
10 | 显色剂B液 | 6 ml×1瓶 | 2-8℃保存 |
11 | 终止液 | 6ml×1瓶 | 2-8℃保存 |
12 | 浓缩洗涤液 | (20ml×30倍)×1瓶 | 2-8℃保存 |
样本处理及要求
1. 血清:室温血液自然凝固10-20分钟,离心20分钟左右(2000-3000转/分)。仔细收集上清,保存过程中如出现沉淀,应再次离心。
2. 血浆:应根据标本的要求选择EDTA或柠檬酸钠作为抗凝剂,混合10-20分钟后,离心20分钟左右(2000-3000转/分)。仔细收集上清,保存过程中如有沉淀形成,应该再次离心。
3. 尿液:用无菌管收集,离心20分钟左右(2000-3000转/分)。仔细收集上清,保存过程中如有沉淀形成,应再次离心。胸腹水、脑脊液参照实行。
4. 细胞培养上清:检测分泌性的成份时,用无菌管收集。离心20分钟左右(2000-3000转/分)。仔细收集上清。检测细胞内的成份时,用PBS(PH7.2-7.4)稀释细胞悬液,细胞浓度达到100万/ml左右。通过反复冻融,以使细胞破坏并放出细胞内成份。离心20分钟左右(2000-3000转/分)。仔细收集上清。保存过程中如有沉淀形成,应再次离心。
5. 组织标本:切割标本后,称取重量。加入一定量的PBS,PH7.4。用液氮迅速冷冻保存备用。标本融化后仍然保持2-8℃的温度。加入一定量的PBS(PH7.4),用手工或匀浆器将标本匀浆充分。离心20分钟左右(2000-3000转/分)。仔细收集上清。分装后一份待检测,其余冷冻备用。
6. 标本采集后尽早进行提取,提取按相关文献进行,提取后应尽快进行实验。若不能马上进行试验,可将标本放于-20℃保存,但应避免反复冻融.
7. 不能检测含NaN3的样品,因NaN3抑制辣根过氧化物酶的(HRP)活性。
操作步骤
注意事项
10. 如与英文说明书有异,以英文说明书为准。
计算
以标准物的浓度为横坐标,OD值为纵坐标,
在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。
(此图仅供参考)
试剂盒性能
1.样品线性回归与预期浓度相关系数R值为0.92以上。
2.批内与批间应分别小于9%和15%
检测范围:
3ng/ml -180ng/ml