Hello! There are four methods of drug testing, urine testing, blood testing, saliva testing and hair testing, and nowadays the most accurate and longest traceability is hair testing.
The most convenient is the urine test paper, but the disadvantages of urine test paper are as follows.
What are the disadvantages of urine testing for drug use?
1) Urine tests have a short retrospective period, usually only within 3 days, and are detected in more than 3 days. Because of this, many drug addicts took drugs a week ago, and the urine test shows negative;
2) urine test will encounter synthetic drug infection, resulting in false positive test results, can not determine whether it is drug use or taking cold medicine, cough syrup and other drugs to produce a false positive result;
3) urine test strips in the drugstore or the hospital in fact can not be bought, this kind of Medical device appliances are state regulations do not allow the sale. Drug urine test panels are non-OTC products, only manufacturers (Zhengfu forensic toxicology forensic laboratory), drug rehabilitation centers and the Public Security Bureau. Some users reminded that it is to go to the Public Security Bureau, Drug Rehabilitation Center to apply for, and the application process will be registered, easy to lead to information leakage, really safe?
Need to do a drug test, direct hair test, hair test can reflect the frequency of drug use within 7 days to 2 years, drug history. Hair has high technical requirements and error-free test results. Many families choose Zhengfu drug test paper for simple operation, in fact, not, hair testing is more convenient, collect hair directly mailed to send the test, you can know the results at home.