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Segmental hair analysis and estimation of methamphetamine use pattern.

Eunyoung Han1, Heejin Yang, Ilung Seol

  • 1National Forensic Service, 111, Daedeok-ri, Seosam-myeon, Jangseong-gun, Jeollanam-do, 515-822, South Korea. homepage2600@hanmail.net

International Journal of Legal Medicine
|September 8, 2012
PubMed
Summary

Segmental hair analysis effectively estimates methamphetamine (MA) use patterns, distinguishing between continuous, previous, and recent use. This method helps classify individuals as light, moderate, or heavy MA users based on hair concentrations.

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Area of Science:

  • Forensic Toxicology
  • Analytical Chemistry
  • Pharmacology

Background:

  • Estimating drug use patterns is crucial for clinical and legal contexts.
  • Hair analysis offers a method for detecting chronic drug exposure.
  • Differentiating between recent and past drug use requires sensitive analytical techniques.

Purpose of the Study:

  • To evaluate the utility of segmental hair analysis for determining methamphetamine (MA) use patterns.
  • To correlate MA and amphetamine (AP) concentrations in hair segments with usage history.
  • To establish a framework for classifying MA users (light, moderate, heavy) based on hair analysis.

Main Methods:

  • Segmental hair analysis was performed on 15 subjects, analyzing hair roots, 1 cm segments, and 1-4 cm segments for MA and AP.
  • Hair samples underwent methanol incubation with hydrochloric acid, followed by evaporation and derivatization.
  • Gas chromatography/mass spectrometry (GC/MS) was employed for the quantitative analysis of MA and AP.

Main Results:

  • Segmental hair analysis successfully differentiated between continuous MA use (n=10), no recent but previous use (n=3), and recent but no previous use (n=2).
  • MA concentrations in whole hair ranged from 3.00 to 105.10 ng/mg (mean 34.53 ng/mg).
  • Individuals were classified as light, moderate, or heavy users based on established concentration ranges.

Conclusions:

  • Segmental hair analysis is a viable method for estimating methamphetamine use frequency and recency.
  • This technique provides valuable insights into individual drug consumption patterns.
  • Hair analysis contributes to a more precise understanding of methamphetamine abuse in forensic and clinical settings.