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210-240 / 1000+ resultsresearch Quantitative analysis of 34 sex (pro)hormones, conjugates and bioactive oxidation products thereof in human plasma by GC- and LC-MS/MS and systematic investigation of overestimations of analyte concentrations not accounted for by method validation
The method accurately measures sex hormones in human plasma but can have small errors.
research Invalidation of a commercially available human 5α-dihydrotestosterone immunoassay
The DHT immunoassay is unreliable due to high cross-reactivity with testosterone.
research TrichoScan: combining epiluminescence microscopy with digital image analysis for the measurement of hair growth in vivo.
TrichoScan accurately measures hair growth and showed improved hair counts and thickness after finasteride treatment.
research DETERMINATION OF FINASTERIDE AND RELATED COMPOUNDS BY REVERSED-PHASE HIGH PERFORMANCE LIQUID CHROMATOGRAPHY. I. CHOOSING THE MOBILE PHASE COMPOSITION
Best results found using acetonitrile, water, and trifluoroacetic acid or methanol mixture.
research TrichoScan
TrichoScan accurately measures hair growth and loss, showing increased hair counts and thickness with treatment.
research Analysis of keratin films as screening tools for predicting the efficacy of potential hair dyes
Translucent keratin films are better for testing hair dyes.
research Quantification of biotin in plasma samples by column switching liquid chromatography – tandem mass spectrometry
The document describes a way to measure biotin in blood to prevent wrong test results in hormone level testing.
research Novel Placenta-Derived Liquid Product Suitable for Cosmetic Application Produced by Fermentation and Digestion of Porcine or Equine Placenta Using Lactic Acid Bacterium Enterococcus faecalis PR31
The new placenta-derived liquid improves skin moisture better than traditional extracts.
research Targeted Determination of Residual Sex Hormones in Cosmetics Using Magnetic Solid-Phase Extraction with Isotope-Labeled Internal Standards by UHPLC-MS/MS
A new method effectively detects trace sex hormones in cosmetics, ensuring safety.
research 085 Coordinate expressions of cyclin-dependent kinase inhibitors and high sulfur protein in human hair follicles
research Preparation of3H-labelled testosterone metabolites
The conclusion is that tritium-labeled testosterone metabolites can be made and are better converted into dihydrotestosterone in skin cells than in prostate tissue.
research Sustainable UV approaches supported by greenness and whiteness assessments for estimating a recently FDA-approved combination for managing urologic disorders: Tukey's test
New, eco-friendly methods accurately measure TDF and FNS in a new urologic medication.
research A HPLC-Based Chloramphenicol Acetyltransferase Assay for Assessing Hair Growth: Comparison of the Sensitivity of UV and Fluorescence Detection
The new method is 1000 times more sensitive for measuring hair growth.
research Cheating on forensic hair testing? Detection of potential biomarkers for cosmetically altered hair samples using untargeted hair metabolomics
Researchers found markers that can tell if hair has been bleached, which could improve hair test accuracy.
research Medical comorbidities in patients with lichen planopilaris, a retrospective case–control study
People with Lichen Planopilaris are more likely to have autoimmune diseases, especially Systemic Lupus Erythematosus, and less likely to have diabetes and some other common conditions.
research Diagnosis of hair disorders during the COVID‐19 pandemic: an introduction to teletrichoscopy
Teletrichoscopy is a promising method for diagnosing hair disorders remotely during the COVID-19 pandemic.
research Development of Fast Reverse Phase Liquid Chromatographic Method for Simultaneous Analysis of Betamethasone Dipropionate and Calcipotriol in Ointments and Bulk Drug
Researchers developed a quick and reliable method to test for betamethasone dipropionate and calcipotriol in ointments and drugs.
research Simultaneous RP-HPLC-DAD determination of dansyl amino acids in chemically treated human hair
A new method accurately measures amino acids in treated hair, showing bleaching reduces amino acids while protein treatments increase them.
research 601 A quantitative study of desquamation in the stratum corneum
New method measures skin cell turnover quickly and effectively, showing turnover slows with age and responds more to treatments in older skin.
research Influence of Chemical Straightening on the Stability of Drugs of Abuse in Hair
Chemical hair straightening significantly reduces detectable drug levels in hair.
research Development of a Liquid Chromatography/Mass Spectrometry-Based Inhibition Assay for the Screening of Steroid 5-α Reductase in Human and Fish Cell Lines
A new method was created to test the effectiveness of Dihydrotestosterone (DHT) inhibitors, like finasteride and dutasteride, in human and fish cells. The results showed fish cells are more sensitive to these treatments, and dutasteride works better than finasteride in all tested cells.
research Painless Hair Analysis
TrichoScan offers a painless way to analyze and manage hair loss.
research Analytical Methods on the Determination of Active Ingredients for Hair Nourisher Products
The new method accurately measures active ingredients in hair nourishment products.
research Quantitative analysis of finasteride tablets dissolution content with non-isotopically labeled internal standard by paper spray ionization mass spectrometry
PSI-MS quickly and accurately measures finasteride in tablets, helping with quality control.
research LC–MS bioanalytical method for simultaneous determination of latanoprost and minoxidil in the skin
Method measures latanoprost and minoxidil in skin accurately and precisely.
research Application of 2-Chloro-7-Nitrobenzo-2-Oxa-1, 3-Diazol (NBDCL) for Spectrophotometric Determination of Finasteride in Pharmaceutical Formulation
A new method using NBD-CL can accurately and precisely measure finasteride in medicine, and could be used regularly for quality control in the industry.
research Validation of Finasteride Tablets USP by HPLC Isocratic with UV Detector
The method is effective and suitable for testing finasteride tablets.
research Analysis of Mercury in Sequential Micrometer Segments of Single Hair Strands of Fish-Eaters
LA-ICP-MS can effectively track mercury exposure over time in hair.
research Sphingolipid Metabolites Profiling in Hair Growth
DHCer levels in hair could be a biomarker for alopecia progression.