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.
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research Testosterone Is Poorly Related to Erectile Dysfunction in Young and Middle-Aged HIV-Infected Men
Testosterone levels are not linked to erectile dysfunction in young and middle-aged men with HIV.
research Revisiting Hyper- and Hypo-Androgenism by Tandem Mass Spectrometry
The document concludes that using LC-MS/MS for measuring androgens is more accurate than older methods, but it needs careful validation and standardized references to be most effective.
research Measurement of Steroid Hormones by Liquid Chromatography-Tandem Mass Spectrometry with Small Amounts of Hair
A new method accurately measures steroid hormones in a few hair strands and could help study chronic stress and hair loss.
research Determination of 19 Steroid Hormones in Human Serum and Urine Using Liquid Chromatography-Tandem Mass Spectrometry
The method accurately measures 19 steroid hormones in human blood and urine using a small sample and is suitable for large-scale monitoring.
research Evaluation of Contamination and Quantification of Drug Penetration Studies Using Quantitative Mass Spectrometry Imaging
QMSI is a valuable method for studying drug penetration in skin tissues.
research Proteomics-Based Screening of Differentially Expressed Proteins in Skin of Chinese Merino Fine Sheep (JunKen Type) by Gender
Gender affects wool traits in sheep, with males and females showing differences in skin proteins related to wool growth.
research Evaluation of the Therapeutic Effects of AGA Drugs by Measuring Finasteride, Dutasteride, and Dihydrotestosterone in Hair
Finasteride and dutasteride effectively reduce DHT in hair, which may help evaluate their treatment success for hair loss.
research Falsely Elevated Testosterone Levels: Role of LC-MS/MS in Reducing Unnecessary Testing
Using LC-MS/MS for hormone measurement can prevent false high testosterone results and avoid unnecessary tests.
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 Analysis of Hair Steroid Hormone Concentrations at Different Parts of the Head by Liquid Chromatography-Tandem Mass Spectrometry
Hormone levels in hair vary across the head, with the highest concentration of a key hormone linked to hair loss at the top.
research New Biomarkers to Evaluate Hyperandrogenemic Women and Hypogonadal Men
The document concludes that hormonal biomarkers are key for diagnosing hyperandrogenemia in women and hypogonadism in men.
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.
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 Characterization of Cutaneous Hormone Production Through Analysis of Skin Secretions
Skin produces different hormones depending on body part and sex, and a new method can measure them.
research LC-MS/MS Improves Screening Towards 21-Hydroxylase Deficiency
LC-MS/MS is more reliable than immunoassays for diagnosing 21-hydroxylase deficiency.
research The Polycystic Ovary Syndrome: A Position Statement from the European Society of Endocrinology
The European Society of Endocrinology advises individualized long-term management for PCOS, focusing on lifestyle changes, accurate diagnosis, and treatments for associated health risks and symptoms.
research Analysis of Hormone Antagonists in Clinical and Municipal Wastewater by Isotopic Dilution Liquid Chromatography Tandem Mass Spectrometry
Researchers developed a method to detect hormone-blocking drugs in wastewater and found them in Beijing's sewage, suggesting they can survive sewage treatment.
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 Comparative Studies on Polyamine Levels in Plasma and Urine of Androgenic Alopecia Patients Treated with Finasteride for a Period of Three Years
Finasteride treatment for three years changes certain polyamine levels in the blood but not in urine.
research Studies on the Persistence of Estradiol Benzoate and Nortestosterone Decanoate in Hair of Cattle Following Treatment with Growth Promoters, Determined by Ultra-High-Performance Liquid Chromatography–Tandem Mass Spectrometry
Detecting steroid esters in cattle hair is inconsistent and influenced by sampling factors.
research Ultra-Performance Liquid Chromatography with Electrospray Ionization Tandem Mass Spectrometry for the Determination of Ketoconazole in Anti-Dandruff Shampoo
The method accurately measures the amount of ketoconazole in anti-dandruff shampoo and cream, and can also be used to monitor the drug in human plasma.
research Finasteride Quantification in Human Plasma by High-Performance Liquid Chromatography Coupled to Electrospray Ionization Tandem Mass Spectrometry: Application to a Comparative Pharmacokinetics Study
New method measures finasteride in plasma, finds two formulations bioequivalent.
research Phytochemical Analyses of Ziziphus Jujuba Mill. Var. Spinosa Seed by Ultrahigh Performance Liquid Chromatography-Tandem Mass Spectrometry and Gas Chromatography-Mass Spectrometry
The study found that Ziziphus jujuba seeds contain beneficial compounds for treating insomnia and anxiety and that the methods used are effective for assessing their quality.
research Determination of Finasteride in Human Plasma by Liquid Chromatography-Electrospray Ionization Tandem Mass Spectrometry with Flow Rate Gradient
Researchers developed a quick and sensitive way to measure finasteride in blood using a small sample size.
research Disturbed Sebum and Microbiome Composition in Sensitive Scalp
Sensitive scalp has higher pH, more redness, abnormal sebum, and altered bacterial makeup.
research Simultaneous Determination of Androgens and Prostaglandins in Human Urine Using Ultra-High-Performance Liquid Chromatography–Tandem Mass Spectrometry
Researchers developed a reliable way to measure hormones in urine, showing that a baldness treatment doesn't change hormone levels.
research Determination of Some Sex Hormones in Health Supplements by Liquid Chromatography with Tandem Mass Spectrometry
The method detected sex hormones in some health supplements, with one containing banned testosterone.
research Simultaneous Determination of Androgens and Prostaglandins in Human Urine Using Ultra-High-Performance Liquid Chromatography–Tandem Mass Spectrometry
Researchers developed a quick and accurate method to measure hormones in urine, confirming a baldness treatment's effectiveness without altering hormone levels.
research Development of a New GC-MS/MS Method for the Determination of Metformin in Human Hair
A new method was created to measure metformin in hair, showing potential for monitoring treatment and medical investigations.