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This study reported the development of two highly sensitive ELISA assays to detect banned substances finasteride and dutasteride in human urine, offering better sensitivity than existing HPLC/MS/MS methods.

Hair dyes penetrate the scalp very minimally, less than 1%.

This study developed a straightforward HPTLC method for detecting nicotine and cotinine in human plasma and urine, concluding that liquid-liquid extraction with methanol: chloroform: ammonia achieved optimal separation and is applicable for forensic analysis of lethal nicotine intoxication.

This study described a new assay for measuring cortisol in hair and found it may serve as a useful biomarker for long-term cortisol exposure, correlating with 24-hour urine cortisol levels in non-obese subjects.

This study found that the reproductive function of female hairdressers may be negatively affected by long-term exposure to permanent-waving solutions containing thioglycolic acid, raising concerns about its potential carcinogenic effects.

This review discusses recent data on the use of anabolic-androgenic steroids and other steroid compounds and reports no new clinical results.

Finasteride caused blisters on hands and feet.

This article discusses the complexities of androgen and antiandrogen therapies in women, detailing diagnostic measures, the effects on libido, and the potential benefits of new progestins with antiandrogenic properties, but presents no new empirical findings.

This study reported that Turkish males with male pattern androgenetic alopecia had significantly lower zinc and copper levels in their hair compared to healthy controls, suggesting these imbalances may play a role in the condition's etiology.

This study found that fecal zinc concentration can serve as a biomarker for early diagnosis of zinc deficiency in lambs, complementing serum zinc evaluations.

This manuscript describes two case reports of preterm newborns with a rare homozygous mutation in the epidermal growth factor receptor, leading to severe health issues and early mortality despite supportive care.

In this study, researchers developed a new 3D skin equivalent assay using mouse epidermal and dermal cells that successfully regenerated organized hair follicles, outperforming a 2D model in hair follicle orientation and quantity, and enhanced hair growth when Wnt3a was added.

This study found that glycated proteins in untreated scalp hair may serve as a non-invasive marker for blood glucose control, but its applicability is limited by factors like cosmetic treatments and sample collection challenges.

This study found differences in urinary androgen and estrogen concentrations between male pattern baldness patients treated with finasteride and healthy controls, suggesting potential biomarkers for post-finasteride syndrome.

This review discusses the relevance of human androgen receptor action in sports doping and examines the potential of cell-based biological assays for detecting androgenic anabolic steroid use, without presenting new research findings.

This review discusses various chemical and instrumental methods for determining macrolides and reports no new experimental results.

This study used a newly validated method to find that one-year finasteride treatment resulted in no significant differences in urinary androgen and prostaglandin levels between male pattern baldness patients and normal controls.

This study reported the development of a novel and reliable liquid chromatographic method to measure testosterone and epitestosterone in human urine, offering sensitive detection for doping control.

This study reports that the metanephrine content was significantly higher in patients with alopecia areata compared to those without the condition.

This study found that nearly all nurses caring for chemotherapy patients showed detectable levels of cyclophosphamide in their urine, indicating significant occupational exposure to this antineoplastic drug.

This study developed and validated a highly sensitive LC-MS/MS method for detecting multiple steroid hormones in urine and serum/plasma, demonstrating its potential for use in large-scale biomonitoring studies.

This review discusses methotrexate's use in dermatology and its mechanisms, pharmacokinetics, dosing, side effects, interactions, and emphasizes the need for further research into optimizing therapy and predicting adverse events.

This article provides an overview of diagnosing Cushing's syndrome, emphasizing the importance of assessing clinical signs and the appropriate use of first-line biochemical screening.

This study found significant differences in scalp microbiome composition and volatile organic metabolites between individuals with alopecia areata and healthy controls, suggesting potential microbiome-related therapeutic interventions for hair growth disorders.

This review discusses current challenges in selective androgen receptor modulator discovery and preclinical evaluation and reports no new results, emphasizing the need for basic research to improve safety and selectivity.

This review discusses the expression of PSA in hormonally-regulated tissues and female malignancies, emphasizing its potential as a diagnostic biomarker and role in antidoping initiatives.

This study suggests that sebum samples can be effectively stored and transported with less stringent requirements than liquid samples, making them suitable for remote or at-home collection before clinical analysis.

This study found that thyroid volume was increased in PCOS patients with insulin resistance, with potential influences from TSH and LH levels on these changes.

This research suggests that plucked hair follicles may serve as a reliable surrogate tissue for tumor biopsies in drug development, based on a mouse model linking hair and tumor pharmacodynamic responses.

In this study, a 54-year-old woman with short bowel syndrome developed biotin deficiency and associated symptoms while on home parenteral nutrition lacking biotin, which improved significantly after supplementation.