In many cases it is also a routine part of pre-employment medical screening and it is increasingly being used even at the employment agency stage of the recruitment process. In these cases you should be advised of the requirement for drug testing in advance of the testing process. In certain work places the requirement for regular drug testing is a contractual agreement, forming an integral part of the employment contract. Employers may also look to drug and alcohol screening after workplace accidents or incidents.
All drug tests use the same internationally set cut off levels for urine testing.
This means that the on-site test kits will test to exactly the same sensitivities as employment tests, and laboratory confirmation tests mirror these cut off levels. How long will the tests stay positive after drug use. Benzodiazepines will mainly show positive for 3 to 7 days, but with a few longer acting drugs, tests can remain positive for up to 30 days after last use. How quickly can we supply test kits. We do not take orders over the net but only by mail order.