Home Drug Testing: What Parents Need to Know | Castle Rock, CO

08 Sep.,2025

 

Home Drug Testing: What Parents Need to Know | Castle Rock, CO

If you think your teen is using drugs, you may have thought about using a home drug test. While this might seem like a simple and quick way to get an answer, drug tests are not always reliable, and your teen may resent being tested.

Link to Accu-Tell

Remember that your teen's doctor can help assess whether your teen has a drug problem, so a lab test is not always needed. However, if a drug test is recommended, your teen should know about it. The American Academy of Pediatrics opposes drug tests without a teen's knowledge and consent. Also, in many states, teens can choose whether to share results with their parents.

Types of Drug Testing

Drug tests most commonly test urine. A Breathalyzer may be used to test for alcohol use. However, it will not detect other substances. Also, many body tissues and fluids can be tested for drug use, like hair, saliva, nails, and sweat. Some of these alternatives show promise but need to be refined. For instance, hair tests do not detect recent drug use. Hair color and type or secondhand marijuana smoke may also skew hair test results.

Limits of Urine Drug Testing

A chemical analysis of urine, or urinalysis, is the most common drug test. But the test has limits and should be confirmed by more specific tests. Here are pitfalls parents should consider.

  • The test may not detect all illicit drugs. Most routine urine tests do not catch LSD (lysergic acid diethylamide), ketamine, ecstasy (3,4-methylenedioxymethamphetamine), inhalant, or anabolic steroid use. Use of these substances is very uncommon, but parents should be aware of this limitation. They also may not detect alcohol, the substance teens are most likely to use.

  • Test results may be false negatives. Most drugs are detectable for only a short time after they are used and can be flushed from the person's system in as few as 12 hours. Within 2 or 3 days, many of these drugs are undetectable. One exception is marijuana. Teens who have been using heavily (daily or nearly daily) can have a positive test result for 2 to 3 weeks or longer (up to 6 weeks in some reports) after quitting.

  • Test results may be false positives. For instance, routine urine test results may show marijuana use days—or even weeks—after your teen has quit using the drug. Also, sinus or allergy medicines and poppy seeds (from poppy seed bagels or muffins) may affect test results. On rare occasions, antibiotics may affect test results.

When Drug Testing May Be Required

The court system or your teen's school may require a drug test. While still a controversial policy, many schools screen young athletes for drug use. Some private schools test all their students. Urine tests also may help teens who are receiving drug treatment to stay away from drugs.

If drug testing is requested, you and your teen's doctor should work together with the school to make a reasonable plan for your teen.

How Your Teen's Doctor Can Help

Your teen's doctor may be able to identify drug use by asking you and your teen questions. However, the doctor will likely want to speak with each of you privately. Although you may want to be with your teen, let the doctor talk with your teen alone and in strict confidence. Keep in mind that your teen's doctor will tell you if your teen is at immediate risk of being harmed or causing harm.

If a drug test is recommended or required,

  • You and your teen's doctor can work together to ensure you get reliable lab results.

  • Make sure your teen's sample is carefully collected and handled by an experienced, certified lab.

  • Guard against human error.

  • Remember that a lab test is just one measure of drug use. Your teen's doctor will also consider your teen's behavior, report, and physical exam, as well as your report, so test results can be interpreted in context.

  • You may need to use consequences like suspending driving privileges or grounding, if your teen refuses a recommended test.

Resources

American Academy of Pediatrics

www.aap.org and www.HealthyChildren.org

National Institute on Drug Abuse

www.drugabuse.gov

Substance Abuse and Mental Health Services Administration (SAMHSA)

www.samhsa.gov

Remember

Teen drug use is a serious problem. You do not have to handle it alone. Treatment works. Do not be afraid to seek professional help from your teen's doctor or a counselor, support group, or treatment program. They can help you provide the support that is so crucial to the success of any treatment program.

Disclaimer

The American Academy of Pediatrics (AAP) is an organization of 67,000 primary care pediatricians, pediatric medical subspecialists, and pediatric surgical specialists dedicated to the health, safety, and well-being of all infants, children, adolescents, and young adults.

In all aspects of its publishing program (writing, review, and production), the AAP is committed to promoting principles of equity, diversity, and inclusion.

Any websites, brand names, products, or manufacturers are mentioned for informational and identification purposes only and do not imply an endorsement by the American Academy of Pediatrics (AAP). The AAP is not responsible for the content of external resources. Information was current at the time of publication. The information contained in this publication should not be used as a substitute for the medical care and advice of your pediatrician. There may be variations in treatment that your pediatrician may recommend based on individual facts and circumstances.

Want more information on Drug Of Abuse Tests? Feel free to contact us.

Drug Testing: MedlinePlus Medical Test

Drug Testing

What is a drug test?

Drugs are chemical substances that can change how your body and mind work. A drug test looks for signs of one or more illegal drugs or certain prescription medicines that can be misused. The test is usually done with a sample of your urine (pee). Less commonly, drug testing uses a sample of your blood, saliva (spit), hair, sweat, fingernails, or breath. The purpose of a drug test is to look for drug use and misuse, which includes:

  • Using any illegal drugs, such as cocaine or club drugs.
  • Misusing prescription medicines, which means taking prescription medicines in a different way than you are supposed to. This can include crushing or snorting tablets, taking more than the prescribed dose, or taking it more often than prescribed. It also includes taking the medicines for a nonmedical purpose, such as to get high. Examples of drug misuse include using a prescription pain reliever to relax or taking someone else's prescription.

A drug test can check for a single drug or for a group of drugs in your body. Drug tests commonly test for:

  • Alcohol
  • Amphetamines, such as methamphetamine and Ecstasy (MDMA)
  • Barbiturates, such as phenobarbital and secobarbital
  • Benzodiazepines, such as alprazolam or clonazepam
  • Cocaine
  • Marijuana (cannabis, THC)
  • Opioids and opiates, such as heroin, codeine, oxycodone, morphine, hydrocodone, and fentanyl
  • Phencyclidine (PCP)
  • Anabolic steroids

Drug tests can find signs of drugs that you took hours to several days or more before the test. How long a drug lasts in your body depends on:

  • The type of drug
  • How much you used
  • How long you were using it before the test
  • How your body reacts to the drug

Other names: drug screen, drug test, drugs of abuse testing, substance abuse testing, toxicology screen, tox screen, sports doping tests

What is it used for?

Drug testing is used to find out whether you have been using or misusing one or more drugs but can't diagnose a drug use disorder (addiction).

A drug test may be used for different purposes, including:

  • Employment. Employers may require that you pass a drug test before they will hire you. The testing may be part of a drug-free workplace program. After you're hired, they may test you to check for on-the-job drug use. If you have a work accident, you may be tested to see whether drugs or alcohol were involved.
  • Sports. Professional and other athletes are often tested for drugs that are used to improve performance, such as anabolic steroids that help build muscle.
  • Substance use disorder treatment. Drug testing may be used to monitor treatment in programs for drug or alcohol use disorder (AUD).
  • Legal evidence. Testing may be part of a criminal or motor vehicle accident investigation. Drug screening may also be ordered as part of a court case.
  • To prevent prescription drug misuse. If you take a prescription medicine that can be addictive, such as opioids for chronic (long-term) pain, your provider may order a drug test to make sure you're taking the medicine correctly.

Drug testing may be scheduled ahead of time or done randomly without notice.

Why do I need a drug test?

You may be asked to take a drug test for a job, to participate in certain organized sports, or as part of a police investigation or court case. In a hospital emergency room, a health care provider may order a drug test if you have signs of a possible drug overdose. Newborns can also be tested for possible prenatal exposure to illegal drugs.

What happens during a drug test?

Drug testing may be done in many different locations, including labs, hospitals, drug treatment centers, and workplaces.

Urine is the most commonly used sample for drug testing. You will be given instructions for how to collect your sample. In certain cases, a health care professional or other person may need to be present while you provide your sample. This is to make sure the urine is yours and isn't contaminated with anything that might affect the test results.

If a blood sample is used to test for drugs, a health care professional will take a blood sample from a vein in your arm, using a small needle. After the needle is inserted, a small amount of blood will be collected into a test tube or vial. You may feel a little sting when the needle goes in or out. This usually takes less than five minutes.

Will I need to do anything to prepare for the test?

Be sure to tell the testing professional if you are taking any prescription drugs, over-the-counter medicines, or supplements, because these substances may affect your test results. Also, you should avoid foods with poppy seeds, which can show up as opiates in a drug test.

Are there any risks to the test?

There are no known physical risks to having a drug test. But if drugs show up in your results, it may affect your job, your eligibility to play sports, the outcome of a legal matter, or other parts of your life.

Before you take a drug test, make sure you know:

  • What you are being tested for
  • Why you are being tested
  • How the results will be used

If you have questions or concerns about a drug test, talk with your provider or the person or organization that is asking for the test.

What do the results mean?

If a drug test result is positive, it means that one or more drugs were found in amounts that suggest drug use or misuse. If you have a positive test result, you'll usually have a follow-up test to make sure the first test was correct. That's because the type of urine testing that's often done first can have false positive results.

A false positive means that the test showed you had a drug in your sample when it really wasn't there. False positives can happen if the test reacts with other chemicals in your body from certain over-the-counter medicines, prescriptions, and foods.

The follow-up drug test after a false positive result is called a confirmatory test. It is a more sensitive test that provides more accurate results.

If a drug test result is negative, it means that either:

  • The drugs that were tested were not found in your sample.
  • A very small amount of drugs was found, but not enough to count as a positive test result for drugs.

Learn more about laboratory tests, reference ranges, and understanding results.

Is there anything else I need to know about a drug test?

If you test positive for a legal drug prescribed by your provider, your employer can't punish you, unless the drug is affecting your ability to perform your job.

If you test positive for marijuana and live in a state where it is legal, employers may still be able to punish you in some states. Employers may do this because they want a drug-free workplace. Also, marijuana is still illegal under federal law.

You can buy home tests for many illegal and prescription drugs. There are two types of tests:

  • At-home tests let you do the entire test at home and get rapid results. But if the test result is positive for drugs, you'll need to have a follow-up lab test to check the accuracy of the result. Before you buy an at-home test, check to see if it includes a kit for collecting a sample, often urine or saliva, to send to a lab in case the home test is positive.
  • A self-collection test has a kit for gathering urine, saliva, or another type of sample to send to a lab for testing. The price of some self-collection tests includes the cost of a follow-up lab test to check the accuracy of the test if it has positive results.

When using home tests, be careful to follow all the instructions. It's best to talk with your provider about using home drug testing so you can decide if it's right for your situation.

References

  1. Cleveland Clinic: Health Library: Diagnostics & Testing [Internet]. Cleveland (OH): Cleveland Clinic; c. Blood Tests; [reviewed Dec 06; cited Nov 11]; [about 16 screens]. Available from: https://my.clevelandclinic.org/health/diagnostics/-blood-tests
  2. FDA: US Food and Drug Administration [Internet]. Silver Spring (MD): U.S. Department of Health and Human Services; Drugs of Abuse Home Use Test; [current as of Sep 27; cited Nov 13]; [about 4 screens]. Available from: https://www.fda.gov/medical-devices/drugs-abuse-tests/drugs-abuse-home-use-test
  3. Drugs.com [Internet]. Drugs.com; c-. Drug Testing FAQs [updated Jun 10; cited Nov 13]; [about 11 screens]. Available from: https://www.drugs.com/article/drug-testing.html
  4. Merck Manual Professional Version [Internet]. Kenilworth (NJ): Merck & Co., Inc.; c. Drug Testing [reviewed Dec; cited Nov 13]; [about 2 screens]. Available from: https://www.merckmanuals.com/professional/special-subjects/illicit-drugs-and-intoxicants/drug-testing
  5. National Institute on Drug Abuse [Internet]. Gaithersburg [MD]: U.S. Department of Health and Human Services; Drug Testing; Nov [cited: Nov 13]; [about 12 screens]. Available from: https://nida.nih.gov/research-topics/drug-testing#drug-testing
  6. Nemours KidsHealth [Internet]. Jacksonville (FL): The Nemours Foundation; c-. Getting a Blood Test; [reviewed Sep; cited Nov 11]; [about 4 screens]. Available from: https://kidshealth.org/en/parents/blood-tests.html
  7. Substance Abuse and Mental Health Services Administration [Internet]. Rockville (MD): U.S. Department of Health and Human Services; Drug Testing Resources [updated Jul 19; cited Nov 13]; [about 8 screens]. Available from: https://www.samhsa.gov/substance-use/drug-free-workplace/drug-testing-resources
  8. Testing.com [Internet]. Seattle (WA): OneCare Media; c. 10-Panel Drug Test; [modified Sep 26; cited Nov 13]; [about 11 screens]. Available from: https://www.testing.com/tests/10-panel-drug-testing/
  9. Testing.com [Internet]. Seattle (WA): OneCare Media; c. The Best At-Home Drug Tests of ; [modified Aug 14; cited Nov 13]; [about 29 screens]. Available from: https://www.testing.com/tests/at-home-drug-test/
  10. Testing.com [Internet]. Seattle (WA): OneCare Media; c. Drug Testing; [modified Aug 4; cited Nov 13]; [about 9 screens]. Available from: https://www.testing.com/drug-testing/
  11. Testing.com [Internet]. Seattle (WA): OneCare Media; c. Urine Drug Tests; [modified Feb 2; cited Nov 13]; [about 16 screens]. Available from: https://www.testing.com/tests/urine-drug-test/
  12. Workplace Fairness [Internet]. Silver Spring (MD): Workplace Fairness; c. Drug Testing; [cited Nov 13]; [about 5 screens]. Available from: https://www.workplacefairness.org/drug-testing-workplace

The information on this site should not be used as a substitute for professional medical care or advice. Contact a health care provider if you have questions about your health.

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