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Hair detection method for discriminating drug addicts

A detection method and hair technology are applied in the field of hair detection for identifying drug addicts, which can solve the problems of affecting reliability, misjudgment of drug use time, and hair fraud, and achieve the effect of reducing loss and improving accuracy.

Pending Publication Date: 2020-10-30
INST OF FORENSIC SCI OF MIN OF PUBLIC SECURITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing detection methods are mainly qualitative. On the one hand, they cannot fully meet the requirements stipulated in the "Standards for the Detection of Hair Samples of Drug-Involved Personnel". On the other hand, there are also relatively large loopholes. The existence of fraud and other circumstances may lead to a positive test result, but it does not come from long-term drug addicts; in addition, for some drug addicts or drug addicts who have just come into contact with drugs, the existing detection methods are also very likely to determine the duration of their drug use. Causes misjudgment and affects the reliability of hair detection results for identifying drug addicts

Method used

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  • Hair detection method for discriminating drug addicts
  • Hair detection method for discriminating drug addicts
  • Hair detection method for discriminating drug addicts

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0088] A man is suspected of long-term abuse of methamphetamine, and his hair is extracted as the test hair. The same treatment method as the above blank hair is used to collect the test hair and the last acetone wash, and analyze with the same LC-MS / MS method .

[0089] Figure 19a It is the LC-MS / MS analysis chromatogram of suspected drug addict's hair in an embodiment of the present invention; Figure 19b It is the LC-MS / MS analysis chromatogram of hair lotion of suspected drug addicts in an embodiment of the present invention.

[0090] Such as Figure 19a As shown, the man's hair contained amphetamine and methamphetamine, the content of amphetamine was 0.34ng / mg, and the content of methamphetamine was 5.6ng / mg;

[0091] Such as Figure 19b As shown, the lotion also contains amphetamine and methamphetamine, wherein the content of amphetamine is 0.0000833ng / mg, and the content of methamphetamine is 0.0014ng / mg;

[0092] If the ratios of amphetamine and methamphetamine i...

Embodiment 2

[0095] A man was suspected of long-term marijuana abuse, and his hair was extracted as the test hair. The same treatment method was used as the blank hair. The test hair and the last acetone wash were collected and analyzed by the same LC-MS / MS method.

[0096] Figure 20a It is the LC-MS / MS analysis chromatogram of suspected drug addict's hair in another embodiment of the present invention; Figure 20b It is the LC-MS / MS analysis chromatogram of hair lotion of suspected drug addicts in another embodiment of the present invention.

[0097] Such as Figure 20a As shown, tetrahydrocannabinol was detected in the man's hair, but no tetrahydrocannabinol was detected, and the content of tetrahydrocannabinol was 0.39ng / mg;

[0098] Such as Figure 20b As shown, tetrahydrocannabinol was also detected in the lotion, but no tetrahydrocannabinol was detected, and the content of tetrahydrocannabinol was 0.0013ng / mg;

[0099] If the ratio of THC in the hair to be tested and the lotion ...

Embodiment 3

[0102] Two men suspected of long-term abuse of opiate drugs extracted their hair as the hair to be tested. The hair to be tested and the last acetone wash were collected by the same treatment method as the above blank hair, and were analyzed by the same LC-MS / MS method. analyze.

[0103] Figure 21a It is an LC-MS / MS analysis chromatogram of the hair of a suspected drug addict in yet another embodiment of the present invention; Figure 21b It is an LC-MS / MS analysis chromatogram of hair lotion of a suspected drug addict in another embodiment of the present invention.

[0104] Such as Figure 21a As shown, heroin, O 6 - monoacetylmorphine, acetylcodeine, codeine and morphine, of which the content of heroin is 0.727 ng / mg, O 6 - the content of monoacetylmorphine is 1.054 ng / mg, the content of acetylcodeine is 0.119 ng / mg, the content of codeine is 0.346 ng / mg, and the content of morphine is 0.889 ng / mg;

[0105] Such as Figure 21b As shown, heroin, O 6 - monoacetylmorphi...

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Abstract

The invention provides a hair detection method for discriminating drug addicts. The method comprises the following steps: cleaning to-be-detected hair, collecting the cleaned to-be-detected hair and the last washing liquor, quantitatively analyzing the drug content in the to-be-detected hair and the washing liquor, and when the ratio of the to-be-detected hair to the washing liquor is more than 10times and the drug content in the to-be-detected hair is more than or equal to a content threshold, determining that a hair detection result is positive. According to the method provided by the invention, on the basis of the existing hair detection, detection of the drug content in the hair lotion is added, the reliability of the hair detection result for discriminating drug addicts is improved by calculating the ratio of the drug content in the hair to the drug content in the lotion, and a scientific basis is provided for the judgment of suspected drug addicts and the drug addiction time.

Description

technical field [0001] The invention relates to a hair detection method for identifying drug addicts, and relates to the technical field of forensic science drug detection. Background technique [0002] With the continuous increase in the number of drug users, how to quickly and accurately identify drug users is a problem that needs continuous attention in this field. At present, the main means and methods used to identify drug addicts are to conduct drug detection on biological evidence samples such as blood, urine, hair, etc. Among them, hair detection is the best means to identify whether drug addicts have taken drugs within a certain period of time, and has huge application market. On October 31, 2018, the Ministry of Public Security issued Article 9 of the "Specifications for Testing Hair Samples of Drug-Related Personnel": O in hair samples 6 - Monoacetylmorphine, Morphine, Methamphetamine, Amphetamine, 3,4-methylenedioxyamphetamine (MDA), 3,4-methylenedioxymethamphe...

Claims

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Application Information

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IPC IPC(8): G01N30/02G01N30/06G01N30/30G01N30/32G01N30/34G01N30/72G01N30/86
CPCG01N30/02G01N30/06G01N30/30G01N30/32G01N30/34G01N30/72G01N30/8675G01N2030/324
Inventor 常靖王爱华王瑞华邹波李佳宜吴小军宋歌张云峰任昕昕
Owner INST OF FORENSIC SCI OF MIN OF PUBLIC SECURITY
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