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elisa檢測試劑盒暫無信息 |
閱讀:320發(fā)布時(shí)間:2015-06-12
青島捷世康生物科技有限公司
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人*(Cortisol)ELISA試劑盒說明書{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試劑盒說明書
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試劑盒說明書
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)酶聯(lián)免疫分析(ELISA)
試劑盒使用說明書
l 本試劑盒僅供科研使用。
l 本試劑盒用于體外定量檢測人血清、血漿、組織、細(xì)胞上清及相關(guān)液體樣本中*(Cortisol)的含量。
l 有效期:6個(gè)月
l 保存條件:2-8℃
實(shí)驗(yàn)原理
本試劑盒應(yīng)用雙抗體夾心法測定標(biāo)本中人*(Cortisol)水平。用純化的人*(Cortisol)抗體包被微孔板,制成固相抗體,往包被單抗的微孔中依次加入*(Cortisol),再與HRP標(biāo)記的*(Cortisol)抗體結(jié)合,形成抗體-抗原-酶標(biāo)抗體復(fù)合物,經(jīng)過*洗滌后加底物TMB顯色。TMB在HRP酶的催化下轉(zhuǎn)化成藍(lán)色,并在酸的作用下轉(zhuǎn)化成zui終的黃色。顏色的深淺和樣品中的*(Cortisol)呈正相關(guān)。用酶標(biāo)儀在450nm波長下測定吸光度(OD值),通過標(biāo)準(zhǔn)曲線計(jì)算樣品中人*(Cortisol)濃度。
試劑盒組成
試劑盒組成 | 96孔配置 | 保存 | |
1 | 說明書 | 1份 | R.T. |
2 | 封板膜 | 2片(96) | R.T. |
3 | 密封袋 | 1個(gè) | R.T. |
4 | 酶標(biāo)包被板 | 1×96 | 2-8℃保存 |
5 | 標(biāo)準(zhǔn)品:225ng/ml | 0.5ml×1瓶 | 2-8℃保存 |
6 | 標(biāo)準(zhǔn)品稀釋液 | 1.5ml×1瓶 | 2-8℃保存 |
7 | 酶標(biāo)試劑 | 6 ml×1瓶 | 2-8℃保存 |
8 | 樣品稀釋液 | 6 ml×1瓶 | 2-8℃保存 |
9 | 顯色劑A液 | 6 ml×1瓶 | 2-8℃保存 |
10 | 顯色劑B液 | 6 ml×1瓶 | 2-8℃保存 |
11 | 終止液 | 6ml×1瓶 | 2-8℃保存 |
12 | 濃縮洗滌液 | (20ml×30倍)×1瓶 | 2-8℃保存 |
樣本處理及要求
1. 血清:室溫血液自然凝固10-20分鐘,離心20分鐘左右(2000-3000轉(zhuǎn)/分)。仔細(xì)收集上清,保存過程中如出現(xiàn)沉淀,應(yīng)再次離心。
2. 血漿:應(yīng)根據(jù)標(biāo)本的要求選擇EDTA或檸檬酸鈉作為抗凝劑,混合10-20分鐘后,離心20分鐘左右(2000-3000轉(zhuǎn)/分)。仔細(xì)收集上清,保存過程中如有沉淀形成,應(yīng)該再次離心。
3. 尿液:用無菌管收集,離心20分鐘左右(2000-3000轉(zhuǎn)/分)。仔細(xì)收集上清,保存過程中如有沉淀形成,應(yīng)再次離心。胸腹水、腦脊液參照實(shí)行。
4. 細(xì)胞培養(yǎng)上清:檢測分泌性的成份時(shí),用無菌管收集。離心20分鐘左右(2000-3000轉(zhuǎn)/分)。仔細(xì)收集上清。檢測細(xì)胞內(nèi)的成份時(shí),用PBS(PH7.2-7.4)稀釋細(xì)胞懸液,細(xì)胞濃度達(dá)到100萬/ml左右。通過反復(fù)凍融,以使細(xì)胞破壞并放出細(xì)胞內(nèi)成份。離心20分鐘左右(2000-3000轉(zhuǎn)/分)。仔細(xì)收集上清。保存過程中如有沉淀形成,應(yīng)再次離心。
5. 組織標(biāo)本:切割標(biāo)本后,稱取重量。加入一定量的PBS,PH7.4。用液氮迅速冷凍保存?zhèn)溆谩?biāo)本融化后仍然保持2-8℃的溫度。加入一定量的PBS(PH7.4),用手工或勻漿器將標(biāo)本勻漿充分。離心20分鐘左右(2000-3000轉(zhuǎn)/分)。仔細(xì)收集上清。分裝后一份待檢測,其余冷凍備用。
6. 標(biāo)本采集后盡早進(jìn)行提取,提取按相關(guān)文獻(xiàn)進(jìn)行,提取后應(yīng)盡快進(jìn)行實(shí)驗(yàn)。若不能馬上進(jìn)行試驗(yàn),可將標(biāo)本放于-20℃保存,但應(yīng)避免反復(fù)凍融.
7. 不能檢測含NaN3的樣品,因NaN3抑制辣根過氧化物酶的(HRP)活性。
操作步驟
注意事項(xiàng)
10. 如與英文說明書有異,以英文說明書為準(zhǔn)。
計(jì)算
以標(biāo)準(zhǔn)物的濃度為橫坐標(biāo),OD值為縱坐標(biāo),
在坐標(biāo)紙上繪出標(biāo)準(zhǔn)曲線,根據(jù)樣品的OD
值由標(biāo)準(zhǔn)曲線查出相應(yīng)的濃度;再乘以稀釋
倍數(shù);或用標(biāo)準(zhǔn)物的濃度與OD值計(jì)算出標(biāo)
準(zhǔn)曲線的直線回歸方程式,將樣品的OD值
代入方程式,計(jì)算出樣品濃度,再乘以稀釋
倍數(shù),即為樣品的實(shí)際濃度。
(此圖僅供參考)
試劑盒性能
1.樣品線性回歸與預(yù)期濃度相關(guān)系數(shù)R值為0.92以上。
2.批內(nèi)與批間應(yīng)分別小于9%和15%
檢測范圍:
3ng/ml -180ng/ml
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