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The methods accurately measured brain androgens, showing most 5α-androstane-3α,17β-diol comes from outside the brain, while androsterone is both transported and made in the brain.

A new method was developed to analyze certain hormones and drugs in human blood efficiently.

A new method accurately measures nine specific hormones in human blood.

The method effectively identifies and measures seven banned substances in cosmetics.

The document describes a way to measure biotin in blood to prevent wrong test results in hormone level testing.

A new method can quickly and accurately measure tobacco exposure and stress using a small hair sample.

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.

QMSI is a valuable method for studying drug penetration in skin tissues.

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.

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.

Drugs localize differently in hair strands based on their properties.

The document concludes that hormonal biomarkers are key for diagnosing hyperandrogenemia in women and hypogonadism in men.

A higher testosterone to dihydrotestosterone ratio may indicate worse metabolic health in women.

The method can measure vitamin B3 levels in human hair accurately.

Tramadol and THC-COOH can be detected in hair for several months after stopping use.

LC-MS/MS is more reliable than immunoassays for diagnosing 21-hydroxylase deficiency.

The new method can measure sleep-related hormones in hair effectively and could help track long-term sleep patterns.

The method effectively detects MeT and TP in dried blood spots after cream application.

A girl with Denys-Drash syndrome was misdiagnosed due to biotin affecting her hormone test results.

Gender affects wool traits in sheep, with males and females showing differences in skin proteins related to wool growth.

LC-MS/MS is essential for accurately detecting pregnanes in pregnant mares.

The method accurately measures steroid hormones in hair to study hormone dynamics related to hair loss.

Finasteride and dutasteride effectively reduce DHT in hair, which may help evaluate their treatment success for hair loss.

Skin produces different hormones depending on body part and sex, and a new method can measure them.

Hair cortisol levels change with age, starting high at birth, decreasing until age 6, then rising to adult levels by age 18.

Using LC-MS/MS for hormone measurement can prevent false high testosterone results and avoid unnecessary tests.

Testosterone levels are not linked to erectile dysfunction in young and middle-aged men with HIV.

Finasteride treatment for three years changes certain polyamine levels in the blood but not in urine.

DHCer levels in hair could be a biomarker for alopecia progression.