Extraction Procedures for Hair Forensic Toxicological Analysis: A Mini-Review

Area of Science:

• Forensic Toxicology
• Analytical Chemistry
• Pharmacology

Background:

• Drugs of abuse are routinely analyzed in forensic toxicology for legal investigations.
• Hair analysis is gaining prominence over blood and urine due to advantages like retrospective drug consumption analysis.
• Limitations of hair analysis are being overcome, expanding its application in forensic science.

Purpose of the Study:

• To review extraction procedures for forensic toxicological analysis in hair.
• To highlight major advances in hair drug analysis, focusing on sample preparation.
• To emphasize the critical role of sample preparation in hair analysis.

Main Methods:

• Review of existing literature on hair sample preparation techniques.
• Analysis of advancements in extraction and instrumental detection methods for drugs in hair.
• Discussion of the impact of improved methods on routine forensic analysis.

Main Results:

• Hair analysis offers advantages over traditional matrices (blood, urine) for drug detection.
• Improved sample preparation and lower detection limits enhance routine hair drug analysis.
• Hair analysis can provide chronological drug exposure information, including daily usage.

Conclusions:

• Extraction procedures and sample preparation are critical in forensic hair analysis.
• Advances in analytical techniques are making hair analysis a routine forensic tool.
• Hair analysis provides valuable retrospective and chronological data for legal investigations.