尿液检测

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岛津企业管理(中国)有限公司 岛津
北京莱伯泰科仪器股份有限公司 莱伯泰科
布鲁克磁共振事业部(Bruker Magnetic Resonance) Bruker
北京清谱科技有限公司 清谱科技
北京东西分析仪器海光仪器赛默飞色谱与质谱杭州谱育科技安捷伦Waters美析仪器海能技术大昌华嘉艾普拜生物上海禾工科学仪器北京祥鹄德祥纳谱分析北京京科瑞达LUMEX
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检测项目:

参考标准:

尿液中代谢产物检测方案(核磁共振)

以高钠、胆固醇、添加糖、饱和脂肪和低纤维摄入为特点的西方饮食方式,带来了诸多公共卫生隐患(O’Keefe et al., 2015)。这种膳食结构造成肥胖和非传染性疾病(NCD)—— 即不会人传人的疾病,如心脏病、癌症和糖尿病等——的患病风险上升。尤其需要关注的是中低收入国家,他们的高热量食物摄入量正在不断增加,并带来新的健康挑战,如 2 型糖尿病发病率的升高。而在高收入国家中,情况并没有更乐观,因为没有一个国家能成功扭转肥胖率的上升趋势。如果任其发展,NCD 患病率将会持续上升,并给医疗保健系统和经济造成额外负担。因 此,我们迫切地需要更好的方法来解决这一问题。 近年来虽然在健康和营养领域取得了重大进展,但对个人饮食选择的了解仍然很少。这导致我们无法建立膳食与疾病之间的因果关系,也无法对公共卫生政策进行有效的评价。造成该问题的原因之一在于膳食数据不准确,即当前的数据收集方法存在缺陷。问卷调查和自我报告一直以来都是记录个人膳食种类和数量的主要手段。然而,依靠这种方式收集的数据往往是不准确的,因为人们很难如实报告自己的饮食习惯,也难以准确记录自己的膳食摄入量(Posma et al., 2020 )。这使得制定公共卫生政策时所依赖的大数据集,以及用于评估膳食结构的方法,都需要改进。
检测样品: 尿液
检测项: 生化检验

布鲁克磁共振事业部(Bruker Magnetic Resonance)

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人体尿液中烷基羟基代谢物检测方案(制备液相色谱)

Clandestine laboratories constantly produce new synthetic cannabinoids to circumvent legislative efforts,complicating toxicological analysis. No extensive synthetic cannabinoid quantitative urinary methodsare reported in the literature. We developed and validated a liquid chromatography–tandem mass spec-trometric (LC–MS/MS) method for simultaneously quantifying JWH-018, JWH-019, JWH-073, JWH-081,JWH-122, JWH 200, JWH-210, JWH-250, JWH-398, RCS-4, AM-2201, MAM-2201, UR-144, CP 47,497-C7,CP 47,497-C8 and their metabolites, and JWH-203, AM-694, RCS-8, XLR-11 and HU-210 parent com-pounds in urine. Non-chromatographically resolved alkyl hydroxy metabolite isomers were consideredsemi-quantitative.  Glucuronidase hydrolyzed urine was extracted with 1 ml Biotage SLE+ columns.Specimens were reconstituted in 150 L mobile phase consisting of 50% A (0.01% formic acid in water)and 50% B (0.01% formic acid in 50:50 methanol:acetonitrile). 4 and 25 L injections were performed toacquire data in positive and negative ionization modes, respectively. The LC–MS/MS instrument consistedof a Shimadzu UFLCxr system and an ABSciex 5500 Qtrap massspectrometer with an electrospray source.Gradient chromatographic separation was achieved utilizing a Restek Ultra Biphenyl column with a0.5 ml/min flow rate and an overall run time of 19.5 and 11.4 min for positive and negative mode methods,respectively. Quantification was by multiple reaction monitoring with CP 47,497 compounds and HU-210ionized via negative polarity; all other analytes were acquired in positive mode. Lower and upper limitsof linearity were 0.1–1.0 and 50–100 g/l (r2> 0.994).
检测样品: 尿液
检测项: 烷基羟基代谢物

上海鑫欣生物科技有限公司

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