Publications by authors named "Alexandre Czech"
Hair analysis for drugs has become extensively used for forensic investigation in recent years. To best interpret hair drug content in post-mortem conditions, the extent of external contamination by biological fluids, such as blood, must be taken into account to avoid false positive results. The present study evaluated opiates and opioids incorporation into hair from blood containing different concentrations of morphine (MOR), 6-mono-acetyl morphine (6-AM), codeine (COD), dihydrocodeine (DHC), tramadol (TRA), oxycodone (OXY), methadone (MET), 2-ethylidene-1,5-dimethyl-3,3- diphenyl pyrrolidine (EDDP), buprenorphine (BUP) and norbuprenorphine (NBUP).
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- Amphetamine-type stimulants, including AMP, MET, MDMA, MDEA, and MDA, are among the most widely used illegal drugs, prompting the development of detection methods in biological samples like hair.
- This study explored how hair can be contaminated from external exposure to blood containing these substances, finding contamination possible within just 6 hours of contact at varying concentrations.
- The findings reveal that MET is particularly likely to contaminate hair, and contamination levels indicate that interpreting results in forensic contexts needs careful consideration, especially at high concentrations.