Watson, I D <br/><br/>
Analysis of commonly abused drugs in urine at selected threshold (cutoff) concentrations.  [electronic resource] 

 -  Clinical chemistry  Mar 1992 
 - 441 p.  digital 
<br/><br/> Publication Type: Comment; Letter 
<br/><br/><label>ISSN: </label>0009-9147 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Buprenorphine--urine<br/>Creatinine--urine<br/>False Negative Reactions<br/>Humans<br/>Substance Abuse Detection