Expected Drug Levels in Hair of Proven Drug Users

Norcocaine

The trapping of drugs in hair has been shown to be dose dependent (55,56). Many variables, however, impact the use of hair results to indicate amount of drug use. These include biochemical individuality, effective washing, and cosmetic treatments. Severe cosmetic treatments can reduce the amount of some drugs in hair, whereas normal shampooing serves to decontaminate, although only partially in many cases. Analyses of the hair from drug users who have tested positive in urinaly-sis provide a...

Sample Adulteration in Urine DOA Testing

The instant DOA testing procedures are instituted, opposing forces are at work to develop methods to avoid detection of drug use. Initially, common household chemicals such as laundry bleach, table salt, toilet-bowl cleaner, hand soap, and vinegar were used. More recently, a variety of products became commercially available, which can be ordered through Internet sites and tollfree telephone numbers. Commercially available adulteration products can be classified into two broad categories. The...

The eScreen123 Software Runs the eScreen System

The eScreen system consists of a suite of hardware installed at the point of collection. The hardware suite consists of a Windows PC, monitor, eReader (Fig. 2), signature capture device, barcode reader, and laser printer. The PC is connected to the Internet, preferably via a broadband connection, and runs the eScreen123 (eScreen) software platform. The eScreen123 (Fig. 3) software is a Web-based application allowing each of the service providers e.g., the collection site, laboratory, MRO, and...

Diluted Urine A Simple Way to Beat Drug Tests

A negative result for the presence of abused drugs in a urine specimen does not necessarily mean that no drug is present. It is also possible that the amount of drug was below the cut-off values used in the drug-testing protocol. Diluting urine is a simple way to beat an otherwise positive drug test if the original concentrations of drugs in the urine are just slightly above the cut-off values. To counteract this strategy, creatinine analysis in urine is an effective method to detect diluted...