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Hair as an alternative matrix in bioanalysis

    Joana Barbosa

    Department of Sciences, Advanced Institute of Health Sciences – North (ISCS-N), CESPU, CRL, 1317, 4585–116 Gandra, PRD, Portugal

    These authors contributed equally

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    ,
    Juliana Faria

    Department of Sciences, Advanced Institute of Health Sciences – North (ISCS-N), CESPU, CRL, 1317, 4585–116 Gandra, PRD, Portugal

    These authors contributed equally

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    ,
    Félix Carvalho

    REQUIMTE, Laboratory of Toxicology, Department of Biological Sciences, University of Porto, Portugal

    ,
    Madalena Pedro

    Department of Sciences, Advanced Institute of Health Sciences – North (ISCS-N), CESPU, CRL, 1317, 4585–116 Gandra, PRD, Portugal

    CEQUIMED, Centre of Medicinal Chemistry, University of Porto (CEQUIMED-UP), Portugal

    ,
    Odília Queirós

    Department of Sciences, Advanced Institute of Health Sciences – North (ISCS-N), CESPU, CRL, 1317, 4585–116 Gandra, PRD, Portugal

    CBMA – Centre of Molecular & Environmental Biology, University of Minho, Portugal

    ,
    Roxana Moreira

    Department of Sciences, Advanced Institute of Health Sciences – North (ISCS-N), CESPU, CRL, 1317, 4585–116 Gandra, PRD, Portugal

    CBMA – Centre of Molecular & Environmental Biology, University of Minho, Portugal

    &
    Ricardo Jorge Dinis-Oliveira

    Department of Legal Medicine & Forensic Sciences, Faculty of Medicine, University of Porto, Portugal.

    Department of Diagnostic & Therapeutic Technologies, Polytechnic Health Institute – North, CESPU, CRL, Portugal

    Published Online:https://doi.org/10.4155/bio.13.50

    Alternative matrices are steadily gaining recognition as biological samples for toxicological analyses. Hair presents many advantages over traditional matrices, such as urine and blood, since it provides retrospective information regarding drug exposure, can distinguish between chronic and acute or recent drug use by segmental analysis, is easy to obtain, and has considerable stability for long periods of time. For this reason, it has been employed in a wide variety of contexts, namely to evaluate workplace drug exposure, drug-facilitated sexual assault, pre-natal drug exposure, anti-doping control, pharmacological monitoring and alcohol abuse. In this article, issues concerning hair structure, collection, storage and analysis are reviewed. The mechanisms of drug incorporation into hair are briefly discussed. Analytical techniques for simultaneous drug quantification in hair are addressed. Finally, representative examples of drug quantification using hair are summarized, emphasizing its potentialities and limitations as an alternative biological matrix for toxicological analyses.

    Papers of special note have been highlighted as: ▪ of interest ▪▪ of considerable interest

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