How to Drug Test Someone

Drug test chasing

When dealing with a friend or family you suspect might be using drugs drug testing is one of the few ways to get a definite answer. Drug tests can both tell you that a person is using, what they are using, and if you know your facts within how long was their last use.

Pay attention this may be a couple of the most important points:

  • When you are going to drug test someone under no circumstances should you warn them or give them any indications you might.
  • Second, once you tell them you are drug testing them, they should not leave your side. If they tell you they can’t go, tell them they will sit on the couch next to you and drink water. If they make up an excuse or refuse to take it tell them: “This is proof that you are using drugs, if you were clean you would take the test.”

That is the truth, even if they were offended, they would take the test to prove you wrong.

Now, most drug tests come with instructions, if they don’t most of them work the same way. The person pees in a cup that comes with the test then either you put in the tester strip or just screw on the lid. Two lines usually indicate the person is negative for the substance while one line indicates they have used the substance.

Drug test

When buying a test, get one that is a 12-panel test—this will tell you specifically if a person is struggling with heroin addiction or any other sort of drug addiction.

The next thing is if you know how long a drug stays in someone’s system it gives you a time frame of when they might have used.

  • Alcohol: 3-5 days
  • Amphetamines: 1-3 days
  • Barbiturates: 2-4 days
  • Cannabis: 7-30 days
  • Codeine: 1 day
  • Cocaine: 3-4 days
  • Heroin: 3-4 days
  • LSD: 1-3 days
  • MDMA (ecstasy): 3-4days
  • Methamphetamine (Crystal Meth): 3-6 days
  • Methadone: 3-4 days
  • Morphine: 2-3 days

With this, you can tell within a certain time frame the person used a drug. It’s also important to keep in mind if you suspect the person is using a specific drug. Testing them close to when you noticed them acting strangely may be important. In addition to the steps above it is important to line up treatment and have professional help. For any questions, you can reach to us at Narconon New Life Retreat.

Almost all convenience stores sell drug tests that will test for most things. However, there are two substances that many drug tests do not test for. The two common drugs that are not included in most drug tests are kratom and synthetic weed. These two, in particular, require a specific drug test which can be bought online.

Many times, dealing with someone who is using drugs, can make life frustrating, to say the least. Not knowing when to trust them and when not to or if you are doing the right thing. No one prepares for dealing with someone who is a drug addict, that is why the staff at Narconon Louisiana are always happy to give help to those struggling. Whether it is finding a treatment center or simply helping to deal with an addict we are here to help.

For more information on drug testing and some ways drug tests are faked please read our blog How to Detect a Faked Drug Test at our website

Dr. Rohit S. Adi, MD

Narconon Louisiana is well equipped to take care of the needs of the addict in your life. Our Medical team is head by Dr. Rohit Adi, a registered member of the board of addiction medicine. As a registered Addictionologist he personally oversees the detox process at our center. Ensuring every person has a safe and comfortable experience coming off of drugs or alcohol. For more information about our center and the services we provide, please visit our website at



Aaron has been writing drug education articles and documenting the success of the Narconon program for over two years.