As a standard sample type, we use urine-based drug testing. Initial (immunoassay) and confirmatory (gas chromatography-mass spectrometry [GC-MS] tests) are the methods most commonly utilized once the urine sample is provided. Using a combination of both tests allows a high level of sensitivity and specificity and reduces changes for false positives or false negatives.
The immunoassay is performed first and is often used as a screening method. If the immunoassay is negative, no further action is required, and the results are reported as negative. If the sample is non-negative, an additional confirmatory GC-MS analysis is performed on a separate portion the sample to identify individual drug substances or metabolites and quantify the amount of the substance prior to reporting positive drug test results to employers.
Hiring an employee is not the same as engaging a contractor through...Read More
Licensing is one of those critical areas that can take a back...Read More