本试剂仅供研究使用 目的：本试剂盒用于测定大鼠血清、血浆、组织匀浆及相关液体样本中白细胞介素 13（IL-13）的含量。

实验原理：

本试剂盒应用双抗体夹心法测定标本中大鼠白细胞介素 13（IL-13）水平。用纯化的大鼠白细胞介素 13（IL-13）捕获抗体包被微孔板，制成固相抗体，往包被的微孔中依次加入大鼠白细胞介素 13（IL-13），再与 HRP 标记的检测抗体结合，形成抗体-抗原-酶标抗体复合物，经过彻底洗涤后加底物 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最终的黄色。颜色的深浅和样品中的大鼠白细胞介素 13（IL-13）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大鼠白细胞介素 13（IL-13）含量。

试剂盒组成：

试剂盒组成 48 孔配置 96 孔配置 保存

说明书 1 份 1 份

封板膜 2 片 2 片

密封袋 1 个 1 个

酶标包被板 1×48 1×96 2-8℃保存

标准品 0.3ml×6 管 0.3ml×6 管 2-8℃保存

酶标试剂 5 ml×1 瓶 10 ml×1 瓶 2-8℃保存

样品稀释液 3 ml×1 瓶 6 ml×1 瓶 2-8℃保存

显色剂 A 液 3 ml×1 瓶 6 ml×1 瓶 2-8℃保存

显色剂 B 液 3 ml×1 瓶 6 ml×1 瓶 2-8℃保存

终止液 3 ml×1 瓶 6 ml×1 瓶 2-8℃保存

20×浓缩洗涤液 15ml×1 瓶 25ml×1 瓶 2-8℃保存

注：标准品浓度依次为：48、24、12、6、3、0 pg/mL.

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

1. 标准品的加样：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；。

2. 加样：分别设空白孔（空白对照孔不加样品及酶标试剂，其余各步操作相同）、待测样品孔。在酶标包被板上待测样品孔中先加样品稀释液 40μl，然后再加待测样品10μl（样品最终稀释度为 5 倍）。加样将样品加于酶标板孔底部，尽量不触及孔壁，轻轻晃动混匀。

3. 加酶：每孔加入酶标试剂 100μl，空白孔除外。

4. 温育：用封板膜封板后置 37℃温育 60 分钟。

5. 配液：将 20 倍浓缩洗涤液用蒸馏水 20 倍稀释后备用。

6. 洗涤：小心揭掉封板膜，弃去液体，甩干，每孔加满洗涤液，静置 30 秒后弃去，如此重复 5 次，拍干。

7. 显色：每孔先加入显色剂 A50μl，再加入显色剂 B50μl，轻轻震荡混匀，37℃避光显色 15 分钟. 

8. 终止：每孔加终止液 50μl，终止反应（此时蓝色立转黄色）。

9. 测定：以空白孔调零，450nm 波长依序测量各孔的吸光度（OD 值）。 测定应在加终止液后 15 分钟以内进行。

注意事项：

1． 试剂盒从冷藏环境中取出应在室温平衡 15-30 分钟后方可使用，酶标包被板开封后如未用完，板条应装入密封袋中保存。

2． 浓洗涤液可能会有结晶析出，稀释时可在水浴中加温助溶，洗涤时不影响结果。

3． 各步加样均应使用加样器，并经常校对其准确性，以避免试验误差。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。

4． 请每次测定的同时做标准曲线，最好做复孔。如标本中待测物质含量过高（样本 OD 值大于标准品孔第一孔的 OD 值），请先用样品稀释液稀释一定倍数（n 倍）后再测定，计算时请最后乘以总稀释倍数（×n×5）。

5． 封板膜只限一次性使用，以避免交叉污染。

6． 底物请避光保存。

7． 严格按照说明书的操作进行，试验结果判定必须以酶标仪读数为准.

8． 所有样品，洗涤液和各种废弃物都应按传染物处理。

9． 本试剂不同批号组分不得混用。

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 0.95 以上。

2.批内变异系数与批间变异系数应分别小于 10%和 10% 。

检测范围： 

1.5 pg/mL - 48 pg/mL

灵敏度： 

最低检测浓度小于 0.1 pg/mL

保存条件及有效期：

1.试剂盒保存： 2-8℃。

2．有效期： 6 个月Rat Interleukin 13

FOR RESEARCH USE ONLY

Drug Names

Generic Name：Rat Interleukin 13 (IL-13) ELISA Kit.

Purpose

This kit allows for the determination of IL-13 concentrations in Rat serum, plasma, tissue

homogenates and other biological fluids.

Principle of the assay

The kit assay Rat IL-13 level in the sample, use Purified Rat IL-13 antibody to coat

microtiter plate wells, make solid-phase antibody, then add IL-13 to the wells, Combined

antibody which With HRP labeled, become antibody-antigen-enzyme-antibody complex, after

washing Completely, Add TMB substrate solution,TMB substrate becomes blue color At HRP

enzyme-catalyzed, reaction is terminated by the addition of a sulphuric acid solution and the

color change is measured spectrophotometrically at a wavelength of 450 nm. The

concentration of IL-13 in the samples is then determined by comparing the O.D. of the samples

to the standard curve.Materials provided with the kit

Materials provided with

the kit 48determinations 96 determinations Storage

User manual 1 1

Closure plate membrane 2 2

Sealed bags 1 1

Microelisa stripplate 1 1 2-8℃

Standard 0.3ml×6 bottle 0.3ml×6 bottle 2-8℃

HRP-Conjugate reagent 5ml×1 bottle 10ml×1 bottle 2-8℃

Sample diluent 3ml×1 bottle 6ml×1 bottle 2-8℃

Chromogen Solution A 3ml×1 bottle 6ml×1 bottle 2-8℃

Chromogen Solution B 3ml×1 bottle 6ml×1 bottle 2-8℃

Stop Solution 3ml×1 bottle 6ml×1 bottle 2-8℃

20×Wash solution 15ml×1 bottle 25ml×1 bottle 2-8℃

Note: Standard concentration was followed by:

48、24、12、6、3、0 pg/mL.

Specimen requirements

1. serum- coagulation at room temperature 10-20 mins，centrifugation 20-min at the speed

of 2000-3000 r.p.m. remove supernatant, If precipitation appeared, Centrifugal again.

2. plasma-use suited EDTA or citrate plasma as an anticoagulant,mix 10-20 mins

,centrifugation 20-min at the speed of 2000-3000 r.p.m. remove supernatant, If precipitation

appeared, Centrifugal again.

3. Urine-collect sue a sterile container, centrifugation 20-min at the speed of 2000-3000 r.p.m.

remove supernatant, If precipitation appeared, Centrifugal again. The Operation of

Hydrothorax and cerebrospinal fluid Reference to it.

4. cell culture supernatant-detect secretory components, collect sue a sterile container,

centrifugation 20-min at the speed of 2000-3000 r.p.m. remove supernatant,detect the

composition of cells, Dilut cell suspension with PBS（PH7.2-7.4）, Cell concentration

reached 1 million / ml, repeated freeze-thaw cycles, damage cells and release of

intracellular components, centrifugation 20-min at the speed of 2000-3000 r.p.m. remove

supernatant, If precipitation appeared, Centrifugal again.

5. Tissue samples- After cutting samples, check the weight,add PBS（PH7.2-7.4）,

Rapidly frozen with liquid nitrogen, maintain samples at 2-8℃ after melting,addPBS（PH7.4）, Homogenized by hand or Grinders, centrifugation 20-min at the speed of

2000-3000 r.p.m. remove supernatant.

6. extract as soon as possible after Specimen collection,and according to the relevant

literature, and should be experiment as soon as possible after the extraction. If it can’t,

specimen can be kept in -20 ℃ to preserve, Avoid repeated freeze-thaw cycles.

7. Can’t detect the sample which contain NaN3, because NaN3 inhibits HRP active.

Assay procedure

1. Add standard: Set Standard wells, testing sample wells. Add standard 50μl to standard well.

2.add sample：Set blank wells separately (blank comparison wells don’t add sample and

HRP-Conjugate reagent, other each step operation is same). testing sample well. add Sample

dilution 40μl to testing sample well, then add testing sample 10μl (sample final dilution is 5-

fold), add sample to wells , don’t touch the well wall as far as possible, and Gently mix.

3.add enzyme：Add HRP-Conjugate reagent 100μl to each well, except blank well.

4.Incubate: After closing plate with Closure plate membrane ,incubate for 60 min at 37℃.

5.Configurate liquid: 20-fold wash solution diluted 20-fold with distilled water and reserve.

6.washing：Uncover Closure plate membrane, discard Liquid, dry by swing, add washing

buffer to every well, still for 30s then drain, repeat 5 times, dry by pat.

7.color：Add Chromogen Solution A 50ul and Chromogen Solution B to each well, evade the

light preservation for 15 min at 37℃

8.Stop the reaction：Add Stop Solution 50μl to each well, Stop the reaction(the blue color

change to yellow color).

9.assay：take blank well as zero , Read absorbance at 450nm after Adding Stop Solution and

within 15min.Important notes

1. The kit takes out from the refrigeration environment should be balanced 15-30 minutes in

the room temperature, ELISA plates coated if has not use up after opened, the plate should

be stored in Sealed bag.

2. washing buffer will Crystallization separation, it can be heated the water helps dissolve

when dilute . Washing does not affect the result.

3. add Sample with sampler Each step, And proofread its accuracy frequently, avoids the

experimental error. add sample within 5 mins, if the number of sample is much ,

recommend to use Volley .

4. if the testing material content is excessively higher (The sample OD is bigger than the first

standard well ),please dilute Sample (n-fold), Please diluente and multiplied by the dilution

factor.（×n×5）.

5. Closure plate membrane only limits the disposable use, to avoid cross-contamination.

6. The substrate evade the light preservation.

7. Please according to use instruction strictly, The test result determination must take the

microtiter plate reader as a standard.

8. All samples, washing buffer and each kind of reject should according to infective material

process.

9. Do not mix reagents with those from other lots.Calculate

Assay range

1.5 pg/mL - 48 pg/mL

Sensitivity

The minimum detectable dose is typically less than 0.1 pg/mL

Storage and validity

1．Storage： 2-8℃.

2．validity： six months.