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尼古丁檢測試劑卡
廣州健侖生物科技?有限公司
本司長期供應尼古丁(可替寧)檢測試劑盒,其主要品牌包括美國NovaBios、廣州健侖、廣州創侖等進口產品,國產產品,試劑盒的實驗方法是膠體金方法。
我司還提供其它進口或國產試劑盒:登革熱、瘧疾、流感、A鏈球菌、合胞病毒、腮病毒、乙腦、寨卡、黃熱病、基孔肯雅熱、克錐蟲病、違禁品濫用、肺炎球菌、軍團菌等試劑盒以及日本生研細菌分型診斷血清、德國SiFin診斷血清、丹麥SSI診斷血清等產品。
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【檢驗原理】本品采用競爭抑制法和膠體金免疫層析法原理定性檢測尿液中的尼古丁,以金標尼古丁單克隆抗體作為指示標記物,在硝酸纖維素膜上的檢測線處和控制線處分別包被尼古丁-BSA結合物和羊抗鼠IgG多克隆抗體。檢測時,尿樣在毛細效應下層析。如尿樣中的尼古丁濃度低于200ng/mL時,金標抗體不能全部與尼古丁結合,未結合的金標抗體在層析過程中與固定在檢測線處的尼古丁-BSA結合物結合,從而在檢測區(T)出現一條紫紅色條帶;如尿樣中尼古丁濃度高于200ng/mL時,金標抗體全部與尼古丁結合,從而在檢測區(T)因為競爭反應不會與尼古丁-BSA結合物結合而不出現紫紅色條帶。無論尿樣中是否存在尼古丁,控制區(C)都會出現一條紫紅色條帶。控制區(C)所呈現的紫紅色條帶是判斷是否有足夠的尿樣,層析過程是否正常的標準,同時也作為試劑的內控標準。
【主要組成成份】
檢測需要但未提供的材料:
【儲存條件及有效期】
儲存條件:原包裝應儲存于4~30℃避光干燥處,切忌冷凍。
有效期:24個月。
試劑盒應在鋁箔袋拆封后1小時內盡快使用;建議在周圍溫度高于30℃或高濕度條件下,盡可能做到即開即用。
【樣本要求】
【檢驗方法】
在進行檢測前必須先完整閱讀使用說明書,使用前將本品和尿樣恢復至室溫(20℃~30℃)。
尼古丁檢測試劑卡
一、臨床實驗室診斷
產氣莢膜梭菌病的正確確診需根據以下幾個方面:
1、小腸內檢測出大量毒素;
2、腸道內有大量產氣莢膜梭菌;
3、腎臟、肝臟等實質器官發現產氣莢膜梭菌和其毒素;
4、尿液含有葡萄糖。
二、產氣莢膜梭菌毒素檢測
產氣莢膜梭菌毒素檢測的經典方法有:
1、動物致死性試驗:將腸道內容物稀釋取上清攻毒小白鼠,觀察小白鼠致死情況;
2、毒素中和試驗法:是更佳準確的方法,提取的毒素與毒素抗體中和后攻毒小白鼠,若對照組死亡,中和組不死亡,則精確表明某型毒素致死;
3、卵磷脂水解試驗法:α毒素能分解卵磷脂,產氣莢膜梭菌所有型均能產生α毒素,能驗證產氣莢膜梭菌的存在。
這些較為常用的方法中,以毒素中和試驗zui為特異,但相對而言這些方法均較費時費力,且敏感性較低。
三、分子生物學診斷方法
隨著生物科學技術的快速發展,一些分子水平上的檢測方法在毒素檢測上得到了普遍應用。Kadra等為了驗證PCR的準確可靠性,用PCR方法對不同來源的產氣莢膜梭菌及毒素進行分型驗證,將90株產氣莢膜梭菌用細菌生化試驗等方法進行驗證,然后用小鼠血清中和試驗進行定型,再用PCR法擴增α、β和ε三種毒素基因片段,zui后將兩種定型方法鑒定的血清型進行驗證,結果表明,兩種方法定型*。表明PCR法準確可靠,且比小鼠的血清中和試驗節約成本,方便可靠。于曉霞等為了尋找一種快速、準確的方法檢測產氣莢膜梭菌毒素型,采用SDS-PAGE的方法,對不同的產氣莢膜梭菌分離株所產的外毒素蛋白進行分子量測定,從而確定所產外毒素的種類,確定菌株型。Fach等首先研究了用聚合酶鏈反應(PCR)方法檢測毒素,參考毒素其他桿菌的磷脂酶C基因,設計了保守區域的針對基因特異性的引物,用PCR法擴增除了基因片段與毒素基因內的序列**,表明可以使用PCR方法檢測毒素基因,從而驗證細菌型。Warren等應用PCR方法對包埋在福爾馬林里的含有產氣莢膜梭菌的病料進行基因檢測,擴增到了α、β和ε毒素基因,雖然產氣莢膜梭菌已經死亡,但產氣莢膜梭菌基因依然沒有被破壞,因而PCR方法可以檢測死亡產氣莢膜梭菌的存在。
擬桿菌屬(Bacteroides)又稱類桿菌屬,是擬桿菌科的一屬,為革蘭氏染色陰性、無芽孢、專性厭氧的小桿菌。
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想了解更多的韓國SD產品及服務請掃描下方二維碼:我司還提供其它進口或國產試劑盒:登革熱、瘧疾、流感、A鏈球菌、合胞病毒、腮病毒、乙腦、寨卡、黃熱病、基孔肯雅熱、克錐蟲病、違禁品濫用、肺炎球菌、軍團菌等試劑盒以及日本生研細菌分型診斷血清、德國SiFin診斷血清、丹麥SSI診斷血清等產品。
二維碼掃一掃
【公司名稱】 廣州健侖生物科技有限公司
【】 楊永漢
【】
【騰訊 】
【公司地址】 廣州清華科技園創新基地番禺石樓鎮創啟路63號二期2幢101-3室
【企業文化宣傳】
First, clinical laboratory diagnosis
The correct diagnosis of Clostridium perfringens need to be based on the following aspects:
1, a large number of toxins detected in the small intestine;
2, a large number of Clostridium perfringens in the intestine;
3, kidney, liver and other organs found Clostridium perfringens and its toxins;
4, urine contains glucose.
Second, Clostridium perfringens toxin detection
Clostridium perfringens toxin detection of classical methods are:
1, animal lethality test: the intestinal contents were diluted to take the supernatant challenge mice to observe the lethality of mice;
2, toxins and test method: a better and more accurate method, the extracted toxins and toxin antibodies and challenge the mice, if the control group died, the neutralization group does not die, then precisely that a toxin to death;
3, lecithin hydrolysis test method: α toxin can break down lecithin, all types of Clostridium perfringens can produce α toxins, to verify the presence of Clostridium perfringens.
Of these more commonly used methods, toxin neutralization test is the most specific, but relatively speaking, these methods are more time-consuming and less sensitive.
Third, molecular biology diagnostic methods
With the rapid development of biological science and technology, some molecular level detection methods have been widely used in the detection of toxins. Kadra et al. In order to verify the accuracy and reliability of PCR, the Clostridium perfringens and toxin from different sources were identified by PCR. 90 strains of Clostridium perfringens were confirmed by the method of bacterial biochemistry, The mouse serum neutralization test was performed. The three α, β and ε toxin gene fragments were amplified by PCR. Finally, the serotypes identified by the two typing methods were validated. The results showed that the two methods were consistent. PCR method is accurate and reliable, and cost-saving than the mouse serum neutralization test, convenient and reliable. Yu Xiaoxia and so in order to find a rapid and accurate method for the detection of Clostridium perfringens toxin type, using SDS-PAGE method, different Clostridium perfringens isolates of exotoxin protein molecular weight determination , To determine the type of exotoxin produced, to determine the strain type. Fach et al first studied the use of polymerase chain reaction (PCR) detection of toxins, with reference to other phospholipase C toxins gene, designed a conserved region of the gene-specific primers, amplified by PCR in addition to gene fragments and toxins gene The exact sequence within the sequence indicates that the toxin gene can be detected using the PCR method to verify the bacterial species. Warren et al. Used PCR to detect the genes encoding C. perfringens embedded in formalin and amplified the alpha, beta, and etoxin genes. Although Clostridium perfringens has died, However, the Clostridium perfringens gene is still intact, and thus the PCR assay can detect the presence of Clostridium perfringens death.
Bacteroides (Bacteroides), also known as Bacteroides genus, is a genus of Bacteroides, Gram-negative, non-spore, obligate anaerobic bacteria.
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