When it comes to drug tests, some people will get tested regularly especially if the field is sensitive. The rules are strict when you fail a drug test and you may be laid off because of that. There are a range of drugs that can be detected when you do a drug test. The most common way of testing for drugs is through using a urine sample but it is not the only way. Blood or even urine can be used in the process. Also, it is a matter of the most convenient way to get the samples too. This is why hair follicles are utilized in checking for the drugs. The best option when you are taking a drug test is to pass it and you have to know how to achieve that. It might be the only thing standing between you and your academics future, career or job.
If you wait for the drugs to clear from your body then you won't fail the test. The body will get rid of toxins in the body eventually and it will be back to default. You should not take this for granted because it is the best way for you to pass the test with flying colors. Here is another reference post: https://en.wikipedia.org/wiki/Drug_test.
Even so, be prepared to wait for 110 days because that is how long it will be before the drugs get out of your system fully. For people who are not under pressure to do the test, it is worth the wait. The best part is that you are sure the test will come out negative. Rather than risking your future and you are not under pressure it is better if you waited for the 110 days to be done. Even though not many, there are some products to pass hair drug test you can try for the hair. Even though they will ensure the drugs are not detectable in your hair follicle, it does not mean they are not still in your system.
Note that using these detoxification products can actually destroy your hair follicles. There is a shampoo that can help you achieve that. The drug will still be present in the hair follicle but the shampoo will ensure it is properly sealed off so that when samples of your hair are taken for testing they will come back negative. Do not use a product you have never heard of not to mention without reviews because there is a high chance you will be disappointed. You will come across a lot of products in the market that have a lot of promises but you have to be cautious. You may learn more here.