199 citations
,
July 2007 in “General and Comparative Endocrinology” Hair cortisol can reliably indicate chronic stress in cats and dogs.
189 citations
,
January 2014 in “Journal of Visualized Experiments” Hair cortisol analysis effectively measures long-term stress.
158 citations
,
January 2003 in “Journal of Forensic Sciences” Hair testing can detect a single GHB exposure, useful for documenting sexual assault.
128 citations
,
January 1996 in “Journal of analytical toxicology.” Hair analysis can detect cocaine use but doesn't accurately show the amount or timing of use.
117 citations
,
August 2005 in “Ultramicroscopy” Human hair's strength and flexibility vary by ethnicity, damage, and treatment.
90 citations
,
July 2014 in “Conservation Physiology” Hair cortisol levels in brown bears can be affected by both long-term and short-term stress.
80 citations
,
January 2011 in “Clinical Chemistry and Laboratory Medicine (CCLM)” Hair cortisol levels can reflect salivary cortisol levels in humans.
74 citations
,
March 2006 in “Journal of Chromatography B” Hair analysis is promising for detecting drug misuse in livestock.
72 citations
,
February 1990 in “British Journal of Clinical Pharmacology” Hair analysis can track haloperidol dosage history.
69 citations
,
January 2002 in “Journal of biomedical optics” Dyes can penetrate human skin and hair follicles up to 1.2 mm deep and the sebaceous gland can store dye; Indocyanine Green lotion was made for safe dyeing and monitoring.
68 citations
,
August 2014 in “PeerJ” Human hair proteins vary by individual, body site, and ethnicity, useful for forensics.
63 citations
,
August 1996 in “Forensic Science International” Cosmetic treatments like bleaching and perming can greatly reduce opiate levels in hair, possibly leading to false-negative drug tests.
53 citations
,
November 1997 in “Journal of Forensic Sciences” Darker hair in guinea pigs holds more codeine than lighter hair.
50 citations
,
July 2018 in “Psychoneuroendocrinology” Hair cortisol can indicate long-term stress levels, but hair growth rate differences may affect accuracy.
44 citations
,
February 2016 in “Zoology” Hair cortisol levels in primates are useful for stress assessment but vary by age, sex, species, and hair collection methods.
34 citations
,
January 2016 in “Analytical Chemistry” A new method can quickly and accurately detect drugs in hair.
27 citations
,
November 2005 in “Archives of Dermatological Research” Choosing hair follicles at the same growth stage leads to more consistent hair growth experiments.
26 citations
,
May 2019 in “PLOS ONE” Hair loss patients have different microbes in hair follicles, possibly affecting hair loss.
25 citations
,
May 2019 in “Cosmetics” 18-MEA and cationic surfactants can restore and maintain hair's hydrophobic nature, improving its beauty and feel.
23 citations
,
August 2019 in “Proceedings of the National Academy of Sciences of the United States of America” Pollution exposure speeds up hair damage.
22 citations
,
February 2002 in “European Neuropsychopharmacology” Hair analysis for drugs in psychosis patients is unreliable due to varying hair growth rates.
21 citations
,
January 2016 in “NeuroImmunoModulation” Hair cortisol levels can indicate stress over the past three months.
20 citations
,
August 2017 in “Drug testing and analysis” Drugs localize differently in hair strands based on their properties.
17 citations
,
May 2020 in “Forensic Science International Genetics” Genetically variant peptides are reliable for forensic identification despite age-related changes in hair proteins.
17 citations
,
May 2007 in “Forensic Science Medicine and Pathology” Clozapine levels in hair reflect dosage and bind more to pigmented hair.
16 citations
,
March 2013 in “Clinica Chimica Acta” Cortisol and cortisone release from hair increases in steps over time during incubation.
15 citations
,
January 2008 in “Annales de Toxicologie Analytique” Hair test results can be misleading due to contamination, so they shouldn't be used alone to determine drug use.
12 citations
,
March 1958 in “American Journal of Clinical Nutrition” Shampooing can affect the loss of minerals like calcium and iron from hair.
11 citations
,
March 2001 in “Clinics in Dermatology” Hair microscopy is useful for diagnosing hair disorders, but clear definitions are needed for accurate genetic analysis.
9 citations
,
January 2021 in “Biomolecules” Infrared spectral imaging can map hair growth proteins and sugars without staining.