Advancing analytical technology and the explosion in pharmaceutical and illicit drug use bring into question our continuing use of presumptive drug screening methods in many clinical and forensic ...

but that such a presumptive test is not necessarily “selective” because an apparently positive result might come from a very similar, but different, chemical (i.e. a false positive). The drug, the ...

At Tuesday night’s Fort Morgan City Council Meeting, Chuck Marting, owner of Colorado Mobile Drug Testing in Fort Morgan, ...