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一种在８分钟内检测四种毒品的方法被开发出来．这种方法简单，快速，准确，可以一次测出尿样中是否含有吸毒者常用的四种毒品代谢物ＴＨＣ（ｌ－ｎｏｒ－Δ－９－ｔｅｔｒａｈｙｄｒｏｃａｎｎａｂｉｒｏｌ－９－ｃａｒｂｏｘｙｌｉｃａｃｉｄ）、ＣＯＣ（ｃｏｃａｉｎｅ）、ＭＯＲ（ｍｏｒｐｈｉｎｅ）、ＡＭＰ（ａｍｐｈｅｔａｍｉｎｅ），这种测试的毒品浓度截止点分别为ＴＨＣ：５０ｎｇ／ｍｌ，ＣＯＣ：３００ｎｇ／ｍｌ，ＭＯＲ：３００ｎｇ／ｍｌＡＭＰ：１０００ｎｇ／ｍｌ．当尿样中毒品浓度在５０％和１５０％截止点浓度时，本测试方法的准确率大于９９％，尿液中可能存在会和测试试剂起交叉反应的５１种物质被证明对本测试系统无干扰作用．通过气相色谱／质谱证实是阳性的尿样经本测试系统测定，结果符合率大于或等于９７％．
A method to detect four drugs within 8 minutes has been developed. This method is simple, rapid and accurate, and can determine whether the urine sample contains four commonly used drug metabolites THC (l-nor-Δ-9-tetrahydrocannabirol-9-carboxylic acid), COC (Morphine) and AMP (amphetamine). The cut-off points for drugs in this test were THC: 50 ng / ml, COC: 300 ng / ml, MOR: 300 ng / ml AMP: 1000 ng / ml, respectively. The accuracy of this test method is greater than 99% when the drug concentration in urine is at 50% and 150% cutoff points. There may be 51 substances in the urine that will cross-react with the test reagents without interference with this test system effect. Urine samples that were positive by gas chromatography / mass spectrometry were tested by this test system and found to have a coincidence greater than or equal to 97%.