Frequently asked questions about rapid drug test (Q&A)

1. What leads you to perform a drug test?

A drug test can verify an initial suspicion of drug use.


2. Can I perform a drug test at home?

Yes. Drug-Detect rapid drug tests can be easily and conveniently performed at home. Please read the according prospect before performing the test.


3. How accurate are the results of a rapid drug test?

Very accurate. The results reach up to 99% results in accordance with GC/MS, the reference method of confirmation in laboratory.


4. Is the result of a rapid drug test valid for court use?

No. Positive test results should be confirmed by a laboratory analysis of the same sample.


5. Which types of rapid drug tests are there?

There are rapid drug tests for urine, saliva and blood samples. In order to perform the test a small amount of the sample is needed.


6.  How long does a rapid drug test take?

Depending on the test type (urine, saliva and blood), the results can be read after 5 up to 10 minutes. Always read carefully the available leaflet.


7. What does “cut-off” mean in rapid drug tests?

The cut-off describes the decision limit at which a drug test can change from negative to positive in the evaluation process. If the drug concentration in the sample is under the decision limit or if no drugs were used, the test will show a negative result. If the drug concentration exceeds this limit, the result will be a positive one. The cut-off of a drug test is indicated in ng/ml.

8. Why are there different cut-off values?

Due to the high sensitivity of today's rapid drug tests, a cut-off value is set in the analysis of narcotics. This is selected so that accidental contamination, such as passive smoking of a cannabis cigarette or touching drug-contaminated banknotes, does not lead to a positive result. Depending on the field of application of a test, the cut-off for the same substance can be chosen differently. In road traffic, the cut-off for cannabis (THC), above which one would have to expect sanctions, is just 1 ng/mL. In a normal drug screening, the cut-off is much higher at 50 ng/mL. Depending on the application and sample material, the cut-off may vary. 

9. How many times can I use a drug test?

A rapid drug test can only be used once. In order to retake a test, please use a new rapid drug test.


10. Can a rapid drug test show a “false positive” result?

Yes, this is theoretically possible. The so-called cross-reactions with other substances (usually medicines) can lead in rare cases to “false positive” results. Further information on possible cross-reactions can be found on the leaflet or can be obtained from our Customer Service.


11. Can you manipulate a drug test? (falsify)

Urine test: It is difficult to manipulate a urine test, but it is not excluded. The sample taking process should be supervised if possible. With the help of other tests (for example the urine control stick), it is possible to measure the pH and creatinine levels. This can prove whether the urine sample is a false one (due to excessive water drinking or use of substances for urine purification).

Saliva test: manipulation of a saliva test is almost impossible.  

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