research Issues About Axial Diffusion During Segmental Hair Analysis
Wait 4-5 weeks after drug use before hair testing and cut hair into three segments to confirm single drug exposure.
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30 / 1000+ resultsresearch Segmental Hair Analysis for 11-Nor-9-Tetrahydrocannabinol-9-Carboxylic Acid and the Patterns of Cannabis Use
THCCOOH levels in hair decrease from root to tip and don't match well with self-reported cannabis use.
research Segmental Hair Analysis as a Retrospective Testosterone Diary: Possibilities and Pitfalls
Segmental hair analysis can track testosterone over time but needs adjustments for sex, hair color, and washing frequency.
research Segmental Hair Analysis - A Retrospective Testosterone Diary?
Hair analysis can somewhat track past testosterone levels but is influenced by factors like hair washing, growth rate, sex, and hair color.
research Different Localizations of Drugs Simultaneously Administered in a Strand of Hair by Micro-Segmental Analysis
Drugs localize differently in hair strands based on their properties.
research Micro-Segmental Analysis of the Entry Pathway and Distribution of Zolpidem in Hair From Different Scalp Regions After a Single Dose
Zolpidem shows up in hair from the top back of the head after one dose and fades over time, suggesting it gets into hair through blood and sweat.
research Development of an Improved Method to Estimate the Days of Continuous Drug Ingestion Based on Micro-Segmental Hair Analysis
Researchers improved a method to more accurately estimate when and how long a drug was taken using hair analysis.
research A Review on Forensic Toxicological Analysis of Drugs in Hair Using Various Instrumental Techniques
Hair analysis is better than urine and blood for detecting past drug use.
research Improved Forensic Hair Evidence for Drugs of Abuse by Mass Spectrometry
Forensic hair analysis for drugs is now more reliable and accurate.
research Specific Interpretation of Hair Concentrations in Two Fatal Metformin Intoxication Cases
Hair analysis showed very high metformin levels in two fatal overdose cases, suggesting it's useful in forensics but sweat may affect results.
research Towards Best Practice in Hair Metabolomic Studies: Systematic Investigation on the Impact of Hair Length and Color
Hair color and length affect metabolite profiles in hair, so they should be considered in hair analysis.
research Hair EtG: Alterations in Segment Levels Accompanying Hair Growth
EtG levels in hair decrease significantly after one month of alcohol abstinence.
research Determination of Vitamin B3 Vitamer (Nicotinamide) and Vitamin B6 Vitamers in Human Hair Using LC-MS/MS
The method can measure vitamin B3 levels in human hair accurately.
research Hair as a Retrospective Calendar of Cortisol Production—Increased Cortisol Incorporation into Hair in the Third Trimester of Pregnancy
Hair cortisol levels can show increased stress during late pregnancy but only for up to six months.
research Is It Getting in the Hair? Cortisol Concentrations in Native, Regrown, and Segmented Hairs of Cattle and Pigs After Repeated ACTH Administrations
Hair cortisol is a reliable stress indicator in cattle but may not be valid for pigs.
research Disappearance of Tramadol and THC-COOH in Hair After Discontinuation of Abuse: Two Different Profiles
Tramadol and THC-COOH can be detected in hair for several months after stopping use.
research New Aspects of the Structure of Human Hair Based on Optical Microscopic Observations of Disassembled Hair Parts
Human hair's strength comes from a honeycomb-like structure and macrofibrils.
research Follicle Hormones
Follicle Stimulating Hormone is important for fertility.
research Improving Stable Isotopic Interpretations Made From Human Hair Through Reduction of Growth Cycle Error
The conclusion is that recognizing hair growth cycles can improve the precision of dietary and health assessments from hair analysis.
research Hair Cortisol: A Biomarker of Chronic Stress in Animals and Its Association With Reproduction
High levels of cortisol in hair show long-term stress which can lower fertility in animals.
research Human Hair: An Important Biological Matrix of Interest
Human hair is a significant sample for various tests in clinical, nutritional, archaeological, and forensic studies.
research Critical Factors in Sample Collection and Preparation for Clinical Metabolomics of Underexplored Biological Specimens
Standardized procedures are crucial for collecting and preparing biological samples to ensure accurate clinical metabolomics results.
research W6: Novelties in Hair Analysis and Interpretation Issues
Hair analysis can be unreliable due to external contamination and varying drug concentrations.
research Detection of Cortisol, Estradiol, and Testosterone in Archaeological Human Hair from the Dakhleh Oasis, Egypt
Ancient hair can preserve hormones, revealing health and fertility insights.
research Testosterone-Like Immunoreactivity in Hair Measured in Minute Sample Amounts: A Competitive Radioimmunoassay with an Adequate Limit of Detection
The new test can measure very small amounts of testosterone in hair, and grinding the hair up first gives more accurate results.
research Hair Follicle Characteristics as Early Marker of Type 2 Diabetes
Hair characteristics might be early signs of Type 2 Diabetes and could help with early prevention.
research Characteristics of Stable Isotope Signature of Diet in Tissues of Captive Japanese Macaques as Revealed by Controlled Feeding
More research is needed to understand how diet affects isotope signatures in Japanese macaque tissues.
research Elemental Hair Analysis: A Review of Procedures and Applications
Hair elemental analysis could be useful for health and exposure assessment but requires more standardization and research.
research Hair Analysis in Health Assessment
Hair mineral analysis might help diagnose diseases early, but standard methods are needed.
research Incorporation of Isotopically Labeled Cocaine and Metabolites into Human Hair: Dose-Response Relationships
Hair analysis can detect cocaine use but doesn't accurately show the amount or timing of use.