Is the spray drug testing kit just to check for drugs on surfaces? Or can you wipe the person and see if they have taken drugs recently? What is the window to detect cocaine use?
This spray drug test kit is primarily used for drug identification and testing for drug residue on surfaces (e.g keyboard, equipment, machinery, steering wheel). If you wish to test a person it would be advisable to use a urine test or saliva test. There is no detection window with this test as you are testing a substance or surface
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