For laboratory proof of preliminary drug test results, collection and testing procedure of specimen is done under the presence of an authorized person with the confirmation by special paperwork. Laboratory tests itself are conducted on collected specimen for detection of drug tests by immunoassay screen followed by GS-MS confirmation test.
For each drug the detection periods and cut off levels depend on the nature and usage of the drug. The detection period of any drug through laboratory urine drug testing is from 6 hours to 3 days from the time of consumption. All screening tests are performed by the immunoassay based on the technology of the testing kit. Confirmatory tests are performed using either gas chromatography/mass spectrometry (GC/MS) or any other superior technique. The samples are treated with either the technical or all of these methods to verify the results. Confirmation results are reported as positive or negative based on SAMSHA cut off levels and all non-negative results are confirmed prior to any disclosure.
Laboratory urine drug test is used as standard test for drug detection. Reliable results are possible with this laboratory drug testing and they can be used as a proof drug abuse. The above information gives you a helpful insight about the laboratory urine drug test, drugs detected through this and the procedure followed.