Urine drug screen

 (urine OR urines OR urinary OR urinalysis OR OR urinalyses OR urinalys*) AND ("drug screen" OR "drug screens" OR "drug screening" OR drug-screen* OR "drug test" OR "drug tests" OR "drug testing" OR drug-test* OR "Substance Abuse Detection/methods"[mesh] OR "substance-related disorders/urine"[mesh] OR "Street Drugs/urine"[mesh])

You may wonder about my reasons for including several terms that would be retrieved by an included truncated term.  My institution recently licensed EMBASE.  Truncation is sometimes rejected in complex EMBASE searches.  I tend to create my basic search with both PubMed and EMBASE in mind.

False positives

The following keyword/MeSH strategy was designed to represent the "false-positive reaction" concept in a search for a drugs causing false-positives in urine drug screening tests.   The strategy shown is not specific unless terms for a type of diagnostic test are added.  This search strategy was designed to yield focused rather than comprehensive results.

(False-positiv*[ti] OR "false positive"[ti] OR "false positives"[ti] OR "false positive reactions"[majr] OR cross-react*[ti] OR ((False-positive* OR "false positive" OR "false positives" OR "false positive reactions"[mesh] OR cross-react* ) AND (interference* OR interferance* OR interfering OR interfered OR interferes OR interfere OR interferer*)) )