research Unusual Presentation of Denys-Drash Syndrome in a Girl with Undisclosed Consumption of Biotin
A girl with Denys-Drash syndrome was misdiagnosed due to biotin affecting her hormone test results.
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60-90 / 1000+ results research Ovarian vein sampling, and serum and urine testosterone monitoring in ovarian Leydig cell tumors: A report of two cases
Ovarian vein sampling helped diagnose rare ovarian tumors causing high testosterone, and surgery to remove the tumors lowered the testosterone levels.
research Measurement of Steroid Hormones in Hair: an Analysis of Hormone Dynamics in Hair Follicles
The method accurately measures steroid hormones in hair to study hormone dynamics related to hair loss.
research Matrix Effect in Quantitative LC/MS/MS Analyses of Biological Fluids: A Method for Determination of Finasteride in Human Plasma at Picogram Per Milliliter Concentrations
Method detects finasteride in plasma at very low concentrations.
research Analysis of sequential hair segments reflects changes in the metabolome across the trimesters of pregnancy
Hair analysis can reveal metabolic changes and potential pregnancy complications.
research How storage post sampling influences the stability of sebum when used for mass spectrometry metabolomics analysis?
Sebum samples remain stable under various storage conditions, making them suitable for remote and at-home testing.
research A quantitative ultra-performance liquid chromatography high-resolution mass spectrometry analysis of steroids from human scalp hair
The method can measure multiple steroids in human hair to study long-term steroid metabolism, especially in newborns and children.
research Omics for Precious Rare Biosamples: Characterization of Ancient Human Hair by a Proteomic Approach
The study developed a method to analyze ancient hair proteins using very small samples.
research A high-performance liquid chromatography–tandem mass spectrometry assay of the androgenic neurosteroid 3α-androstanediol (5α-androstane-3α,17β-diol) in plasma
Testosterone increases 3α-androstanediol levels, which can be blocked by finasteride.
research Simultaneous determination of 30 hormones illegally added to anti-ageing functional foods using UPLC-MS/MS coupled with SPE clean-up
New method effectively detects illegal hormones in anti-aging foods.
research Simultaneous Determination of Selected Steroids with Neuroactive Effects in Human Serum by Ultrahigh-Performance Liquid Chromatography–Tandem Mass Spectrometry
A new method accurately measures nine neuroactive steroids in small blood samples, helping to study brain diseases.
research Determination of Minoxidil by Bleaching the Permanganate Carrier Solution in a Flow-Based Spectrophotometric System
The method quickly and accurately measures minoxidil in drugs, comparable to standard techniques.
research Electrochemical Detector for Liquid Chromatography: Determining Minoxidil in Hair-Growth Pharmaceuticals
The method effectively detects minoxidil in hair-growth products.
research Simultaneous quantitation of nine hydroxy-androgens and their conjugates in human serum by stable isotope dilution liquid chromatography electrospray ionization tandem mass spectrometry
A new method accurately measures nine specific hormones in human blood.
research Determinants of hair cortisol and hair cortisone concentrations in adults
Hair cortisol and cortisone levels increase with age, are higher in diabetics, vary by gender, decrease with frequent hair washing, and are lower in winter.
research Simultaneous LC-MS/MS quantification of glucocorticoids, melatonin and its metabolites in hair
The new method can measure sleep-related hormones in hair effectively and could help track long-term sleep patterns.
research Diagnosis and treatment of methylmalonic acidemia in 14 cases
Early diagnosis and proper treatment improve outcomes for methylmalonic acidemia.
research The 39th Manfred Donike workshop on doping analysis
The 39th Manfred Donike Workshop discussed methods for detecting misuse of steroids, gene doping, and the complexity of identifying drug residues in urine, highlighting the ongoing efforts to improve global anti-doping work.
research LC/MS analysis of stratum corneum lipids: ceramide profiling and discovery
A new, quick method was developed to analyze skin lipids, discovering a new ceramide subclass.
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 Design and Validation of a Sensitive Multisteroid LC-MS/MS Assay for the Routine Clinical Use: One-Step Sample Preparation with Phospholipid Removal and Comparison to Immunoassays
The new LC-MS/MS method is more accurate and reliable than traditional immunoassays for measuring steroids in serum.
research Sex steroid levels in corresponding cerebrospinal fluid and serum samples quantified by mass spectrometry in men
DHEA is the main sex steroid in cerebrospinal fluid, and testosterone in the fluid comes from the blood.
research Therapeutic maintenance effect of finasteride 1 mg every other month regimen in androgenetic alopecia and study on the difference in response to finasteride treatment: A prospective cohort study
Taking finasteride every other month can still help with hair loss but may be less effective over time compared to taking it daily.
research In Vitro and In Vivo Assessment of Metabolic Drug Interaction Potential of Dutasteride with Ketoconazole
Taking Dutasteride with Ketoconazole can increase Dutasteride's effects and side effects.
research Green and Emerging Microextraction Strategies for Bioanalytical Determination of Hormones: Trends, Challenges, and Applications
Microextraction techniques improve hormone testing while being environmentally friendly.
research An Analytical Framework for the Selective Extraction and Determination of Nine Multiclass Endocrine-Disrupting Chemicals from Haircare Products
Haircare products may expose users to harmful chemicals despite regulations.
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 Amperometric detection of minoxidil in hair lotion using a glassy carbon electrode modified with gold nanostructures
A new method accurately detects minoxidil in hair lotions, revealing discrepancies in labeled content.
research Quantification of Squalene and Lactic Acid in Hair Bulbs with Damaged Sheaths: Are They Metabolic Wastes in Alopecia?
Squalene may be a marker for certain types of alopecia.
research Isolation and HPLC Quantitative Determination of 5α-Reductase Inhibitors from Tectona grandis L.f. Leaf Extract
Teak leaf extract contains compounds that could help treat hair loss.