Purpose: In the field of urine drug testing, there are several strategies to manipulate a urine sample to become false negative and a wide variety of instructions and manipulation kits are offered on the internet. Some adulteration techniques for urine seriously disturb immunolog...
Open access
Research Article10.9734/JALSI/2018/40427
Purpose: Drug testing by means of urine samples is part of the standard operating procedures in a wide range of related settings. In order to avoid sample manipulation by the client, samples are almost collected under direct observation. However, the supervision procedure is hand...
Open access
Research Article10.9734/JALSI/2018/44565
Purpose: Urine marking is an alternative approach to supervise sample collection in order to prevent urine manipulation in the field of drug usage and the use of doping substances. Polyethylene glycols (PEG) with low molecular masses are already established as marker substances b...
Open access
Research Article10.9734/JALSI/2017/38741