The coupling of capillary electrophoresis–electrospray ionization and time-of-flight mass
spectrometry, combining efficiency and speed of separation with high mass accuracy and …

The aim of this study was to evaluate the performance of a technique for the simultaneous
testing of opiates, cocaine and metabolites in hair by interlaboratory comparison. Sixteen …

Objective The purpose of this study was to validate the method of determining
methamphetamine (MA) and amphetamine (AP) in hair, using derivatization coupled with …

Aims.–Contrary to the illegal use of any form of manufactured cocaine, chewing of coca
leaves and drinking of coca tea is allowed and is very common and socially integrated in …

Narcotic drug use is an important problem in our country and all over the world. Hair is a
valuable specimen for monitoring these long-term drug uses. For this purpose, a sensitive …

Recently, we published a multi-analyte method for the simultaneous analysis of 116 drugs
and pharmaceuticals including different substance groups like opioids, stimulants …

The main reason for the increasing cocaine consumption in South America is the high
consumption of drugs in Brazil, which is the largest market on the continent. In light of this …

Natural and synthetic opioids have efficient analgesic activity but can also be addictive.
Thus, the determination of opioids and their metabolites in biological specimens is of interest …

An UPLC–TOF-MS method for simultaneous screening and quantification of 52 drugs in hair
was developed and validated. The selected drugs represent the most common classes of …

A simple procedure for the quantitative determination in hair samples of 13 common drugs of
abuse or metabolites (morphine, 6-acetylmorphine, codeine, amphetamine …