人（Human）叶酸（folic acid）ELISA检测试剂盒

本试剂盒只能用于科学研究，不得用于医学诊断
人（Human）叶酸（folic acid）ELISA检测试剂盒
使用说明书
检测原理
试剂盒采用双抗体一步夹心法酶联免疫吸附试验（ELISA）。往预
先包被叶酸（folic acid）抗体的包被微孔中，依次加入标本、标准品、
HRP标记的检测抗体，经过温育并*洗涤。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zui终的
黄色。颜色的深浅和样品中的叶酸（folic acid）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。
样品收集、处理及保存方法
1. 血清：使用不含热原和内毒素的试管，操作过程中避免任何细胞
刺激，收集血液后，3000 转离心10 分钟将血清和红细胞迅速小心地
分离。
2. 血浆：EDTA、柠檬酸盐或肝素抗凝。3000 转离心30 分钟取上清。
3. 细胞上清液：3000 转离心10 分钟去除颗粒和聚合物。
4. 组织匀浆：将组织加入适量生理盐水捣碎。3000 转离心10 分钟
取上清。
5. 保存：如果样本收集后不及时检测，请按一次用量分装，冻存于
-20℃，避免反复冻融，在室温下解冻并确保样品均匀地充分解冻。
自备物品
1. 酶标仪（450nm）
2. 高精度加样器及枪头：0.5-10uL、2-20uL、20-200uL、200-1000uL
3. 37℃恒温箱
操作注意事项
1. 试剂盒保存在2-8℃，使用前室温平衡20 分钟。从冰箱取出的
浓缩洗涤液会有结晶，这属于正常现象，水浴加热使结晶*溶解
后再使用。
2. 实验中不用的板条应立即放回自封袋中，密封（低温干燥）保存。
3. 浓度为0 的S0 号标准品即可视为阴性对照或者空白；按照说明Materials supplied
Name 96 determinations 48 determinations
Microelisa stripplate 12*8strips 12*4strips
Standard 0.3ml*6tubes 0.3ml*6tubes
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
Note: Standard （S0 → S5） concentration was followed by:0,1.5,3,6,12,24 ng/ml
Reagent preparation
20×wash solution:Dilute with Distilled or deionized water 1:20.
Assay procedure
1. Prepare all r e a g e n t s 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 esting 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
1. 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