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.
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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 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 Disturbed Sebum and Microbiome Composition in Sensitive Scalp
Sensitive scalp has higher pH, more redness, abnormal sebum, and altered bacterial makeup.
research Ex-Vivo Measurement of Scalp Follicular Infundibulum Delivery of Zinc Pyrithione and Climbazole from an Anti-Dandruff Shampoo
The method shows that zinc pyrithione and climbazole from anti-dandruff shampoo effectively reach the scalp.
research Simultaneous Determination of 30 Hormones Illegally Added to Anti-Aging Functional Foods Using UPLC-MS/MS Coupled with SPE Clean-Up
New method effectively detects illegal hormones in anti-aging foods.
research Profiling Steroid and Thyroid Hormones with Hair Analysis in a Cohort of Women Aged 25 to 45 Years Old
The method can measure multiple hormones in women's hair and may help identify hormone-related health issues.
research Metabolic Study of Androsta-1,4,6-Triene-3,17-Dione in Horses Using Liquid Chromatography/High Resolution Mass Spectrometry
The study found that urine metabolites M1b or M4 are the best indicators of ATD use in horses, with detection possible up to 77 hours in urine and 28 hours in blood.
research Insights From Liquid Chromatography-Mass Spectrometry-Measured Androgens in Indian Women With Polycystic Ovary Syndrome
Androstenedione is better than testosterone for diagnosing PCOS in Indian women.
research High Resolution Full Scan Liquid Chromatography Mass Spectrometry Comprehensive Screening in Sports Antidoping Urine Analysis
The method effectively detects banned substances in urine for sports antidoping.
research Development of a Liquid Chromatography/Mass Spectrometry-Based Inhibition Assay for Screening Steroid 5-Alpha 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 Correlation of Cortisol in 1-Cm Hair Segment with Salivary Cortisol in Humans: Hair Cortisol as an Endogenous Biomarker
Hair cortisol levels can reflect salivary cortisol levels in humans.
research Exploring the Impact of the Microbiome on Neuroactive Steroid Levels in Germ-Free Animals
Gut microbes significantly affect brain steroid levels.
research High-Throughput and Direct Measurement of Androgen Levels Using Turbulent Flow Chromatography Liquid Chromatography-Triple Quadrupole Mass Spectrometry to Discover Chemicals That Modulate Dihydrotestosterone Production in Human Prostate Cancer Cells
Researchers found four natural compounds that can change DHT levels in prostate cancer cells.
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 A Rapid, Simple, Specific Liquid Chromatographic–Electrospray Mass Spectrometry Method for the Determination of Finasteride in Human Plasma and Its Application to Pharmacokinetic Study
Method measures finasteride in plasma, suitable for pharmacokinetic studies.
research LC-MS/MS Improves Screening Towards 21-Hydroxylase Deficiency
LC-MS/MS is more reliable than immunoassays for diagnosing 21-hydroxylase deficiency.
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 Development and Validation of Rapid and Simultaneous Method for Determination of 12 Hair-Growth Compounds in Adulterated Products by UHPLC-MS/MS
Researchers created a reliable method to detect hair-growth substances in products.
research A New Label-Free Screen for Steroid 5α-Reductase Inhibitors Using LC-MS
Researchers developed a new method to find substances in herbs that can block a specific enzyme linked to hair loss.
research Long-Term Detection of Methyltestosterone Use by a Yeast Transactivation System
A yeast-based test can detect the steroid methyltestosterone in urine longer than traditional methods.
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.
research Sex Hormones and Hair Loss in Men From the General Population of Northeastern Germany
Men's hair loss is not linked to their sex hormone levels, except for lower DHEAS in those with hair loss.
research A Non-Invasive Hair Test to Determine Vitamin D3 Levels
The hair test for vitamin D could be a useful alternative to blood tests, providing a longer-term vitamin D status, but more research is needed.
research Detection of Urine Metabolites in Polycystic Ovary Syndrome by UPLC Triple-TOF-MS
Researchers found potential urine markers for polycystic ovary syndrome, including testosterone-glucuronide and 11α-hydroxyprogesterone, which may help diagnose the condition.
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 Simultaneous Quantitative Analysis of Tamsulosin and Finasteride in Pharmaceutical Dosage Form by U-HPLC Tandem Mass Spectrometry
Method measures tamsulosin and finasteride in medicine accurately.
research Management of Endocrine Disease: Hyperandrogenic States in Women - Pitfalls in Laboratory Diagnosis
Diagnosing hyperandrogenism in women is complex and requires accurate testing methods and consideration of SHBG levels.
research Congenital Adrenal Hyperplasia: Current Insights in Pathophysiology, Diagnostics, and Management
Early diagnosis and individualized treatment improve outcomes for Congenital Adrenal Hyperplasia.
research Androgen Profile Through Life in Women With Polycystic Ovary Syndrome: A Nordic Multicenter Collaboration Study
Women with PCOS have higher androgen levels that decrease with age but are still higher than in women without PCOS.