33 citations
,
June 1995 in “International journal of legal medicine” This study observed that prolonged water or soil exposure can lead to significant reductions in drug levels in bleached and natural hair samples.
63 citations
,
August 1996 in “Forensic Science International” In this study, bleaching and perming were found to significantly reduce opiate concentrations in both spiked and naturally opiate-positive human hair samples.
14 citations
,
January 1996 in “Journal of Forensic Sciences” This in vitro study found that opiate diffusion was more pronounced in damaged hair fibers than in undamaged ones, with high opiate concentrations detected in fiber centerpieces.
157 citations
,
April 1997 in “International journal of legal medicine” This study found that cosmetic hair treatments like bleaching and dyeing significantly reduced drug concentrations in hair samples, with decreases ranging from 30% to over 60% depending on the treatment and hair damage level.
111 citations
,
August 1998 in “Journal of Investigative Dermatology” This study found that human epidermal keratinocytes express a functional μ-opiate receptor at both the mRNA and protein levels, potentially playing a role in skin physiology and pathology.