According to the World Drug Report 2024 released by the United Nations Office on Drugs and Crime in June this year, the number of drug users worldwide has increased to 292 million in 2022, an increase of 20 percent in 10 years.

Drug control is a worldwide problem, drug abuse not only harms the physical and mental health of individuals, but also brings a huge negative impact on the society. Drug users often get stuck in the drug mire and find it difficult to extricate themselves.

Drug of abuse tests, also known as drug tests, are used to detect the presence of illegal or prescription drugs in a person's system. This type of testing is commonly used in workplaces, schools, and by law enforcement agencies. The tests can be conducted using various methods, including urine, blood, hair, and saliva samples.

With the progress of medical technology and the development of social economics, the average life expectancy of human beings has been significantly improved. However, this kind of human social progress has brought a huge challenge -- population aging. At present, the proportion of the elderly population in the world is increasing rapidly. According to the World Social Report 2023 released by the United Nations on January 12th, the global population aged 65 and above is 761 million in 2021, and this number will increase to 1.6 billion by 2050. The population aged 80 and above is growing faster.