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cxli84

新虫 (初入文坛)

[求助] 跪求大侠,LC-MS/MS检测全血中GSH和GSSG

LC-MS/MS检测全血中GSH和GSSG,此前检测样本都在范围,且标准品响应良好,现在标准品响应不太好,问题如下:
1.GSSG标准品的最低点基本无响应
2.样本检测值GSH,GSSG均偏低且偏低较大
跪求各位大侠:
1.GSH/GSSG检测对血液样本要求是如何的,我们样本基本是从外地寄过来的,室温不避光,采集后基本4天左右到公司,然后-80度保存三天内检测,样本运送及保存是否合理?有何建议?
2.标准品存放在-80度,请问使用中有何注意事项,有效期多久?

在线等答案,跪谢!公司压力大,亟待解决此问题,请大侠出手!
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cxli84

新虫 (初入文坛)

样本处理过程是,第一步用水稀释20倍,第二步,乙腈稀释10倍,(此时2稀释200倍的用于检测GSSG)第三步用水稀释20倍(总共稀释4000倍用于检测GSH)
2楼2016-07-07 15:12:57
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