Frequently Asked Questions

The multi-drug of abuse urine test dip card is a drug screen test. It provides preliminary results for the detection of one or more of the drugs at the cut-off level:

Abbreviation Test
AMP Amphetamine
BAR Barbiturates
BZD Benzodiazepine
COC Cocaine
MET Methamphetamine
MOR Morphine
MTD Methadone
PCP Phencyclidine
TCA Tricyclics
THC Marijuana/Hashish
XTC MDMA or Ecstasy
The drug test cut-off level is the specified concentration of a drug in a urine sample. Above that concentration the test is called positive, and below that concentration it is called negative.
Examples of drugs of abuse include marijuana, cocaine, opiates, heroin, amphetamines, Ecstasy or MDMA, and phencyclidine. Prescription drugs, such as morphine, codeine or other painkillers, also may be abused.
Drug Street Name
Amphetamines Speed, Amp, Bennie, Chalk, Black beauties
Cocaine Big C, Coke, Snow, Flake, Candy, Crack, Blow, Rock
Methamphetamines Crystal, Meth, Ice, Glass
MDMA Ecstasy, E, Adam, XTC, X
Opiates Heroin, H, Hairy hombre, horse, Jones, Scag
Marijuana (THC) Pot, Weed, Herb, Bud, MJ, Doobie, Reefer, Grass joint, Homegrown, Spliff
Phencyclidine Angel dust, hog, Killer weed

The following are guidelines only. The times can vary significantly from these estimates depending on how long the person has been taking the drug, amount of drug they use, or the person's metabolism.

Drug Detection Times
Minimum Maximum
Amphetamines/ Methamphetamines (Speed/Uppers) 4-6 hours 2-3 days
Cocaine (Crack) 2-6 hours 2-3 days
Heroin (Opiates) 2-6 hours 1-3 days
Marijuana (Pot) 1-3 hours 30 days
Phencyclidine (Angel Dust/PCP) 4-6 hours 7-14 days

The test is fairly sensitive to the presence of drugs in the urine. This means that if drugs are present, you will usually get a preliminary positive result. If you get a preliminary positive result, you should send the urine sample to the laboratory for a second, more accurate confirmation test.

It is very important to send the urine sample to the lab, because the initial drug screen result may give positive results when no drugs are actually present. Certain foods, food supplements, beverages, diet pills, or over-the-counter medicines can cause a reaction with the tests. Laboratories use a very reliable test method called gas chromatography mass spectrometry to determine whether or not your sample contains drugs.

Here are common reasons for inaccurate results:

  • Improper procedure performing the test (i.e. reading results too early, not providing enough sample, etc.)
  • Mishandling or adulteration of specimen or test
  • Other ingested substances, this includes food, over the counter medications and prescription medications
  • Manufacturer error (we double test all lots to verify this isn't an issue)

55 consumers participated in a field study. The results of the study are summarized below. All 14 incorrect results are at drug concentrations at 50% ~ 150% of the cutoffs.

Drug Cutoff Conc. (ng/ml) # Test Result Interpretation
Correct Incorrect
AMP 1000 220 217 3
BAR 200 220 219 1
BZD 300 220 217 3
COC 300 220 219 1
MET 1000 220 219 1
MOR 2000 220 217 3
MTD 300 220 220 0
PCP 25 220 220 0
THC 50 220 219 1
TCA 1000 220 219 1
XTC 500 220 220 0

No. There are several factors that can make the test results negative even though the person is using drugs. Because

  • You may have tested for the wrong drugs.
  • You may not have tested the urine when it contained drugs. It takes time for drugs to appear in the urine after a person takes them, and they do not stay in the urine indefinitely; you may have gotten the urine too soon or too late.
  • The person knowingly added something to the urine to prevent it from reacting with the test chemicals.
  • The chemicals in the test went bad because they were stored incorrectly or they passed their expiration date.
If you get a negative result, but still suspect drug abuse, you can test again at a later time. You should also consider testing other types of drugs. Talk to your doctor if you need more help deciding what steps to take next.
A false positive result is a screening test read positive when the drug or drug metabolite is not present or its concentration is less than the cutoff level.
The Multi-Drug Urine Test is a screening test. It is the first step in a two-step process. Screening tests are not as accurate as laboratory tests. It is possible to get a positive result when the person did not take drugs. For example, some medicines and food may cause the screening tests to incorrectly read positive. Things such as diet pills, inhalers and cough syrup can cause a positive result. You should consult with your doctor to better understand how medications may interfere with this test.
No. Wait until you get the laboratory's result. Remember that many factors may cause a false positive result in the home test. It is important to send any sample giving positive results to the laboratory for further evaluation.
The lab uses very accurate and reliable equipment to run the tests. If the lab reports a positive result, it means the drug was present in the urine sample. But do not assume the urine sample came from a drug abuser.

Consider all amphetamine results carefully, even those from the lab. Some over-the-counter medications contain amphetamines that cannot be distinguished from illegally abused amphetamines.

  • If you received a positive result and you do not believe the test, consult your doctor. They have your medical history and they can provide you with detailed information.
  • If a positive result was confirmed, consult you doctor to identify counselors who will help you. You can also contact one of the resources listed below for help.
  • National Institute on Drug Abuse
    Phone: 301-443-1124
  • Center for Substance Abuse Prevention
    Substance Abuse and Mental Health Services Administration
    Phone: 301-443-9110
  • Centers for Disease Control and Prevention
    Phone: 404-639-3534
    Phone: 800-311-3435 (toll-free)
  • Safe and Drug-Free Schools Program
    U.S. Department of Education
    Phone: 800-872-5327 (toll-free)
  • National Clearinghouse for Alcohol and Drug Information
    Phone: 800-729-6686 (toll-free)
  • National Council on Alcoholism and Drug Dependence
    Phone: 800-622-2255 (toll-free)
  • American Council for Drug Education
    Phone: 301-443-3860

Temperature limitation Use by
temp Batch/Lot code


In vitro diagnostic medical device
manufacturing Manufacturer


Catalog number
sigma1 Contains sufficient for < n > tests infobook Consult instructions for use
noreuse2 Do not reuse
Caution Caution, consult accompanying documents