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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.

The method effectively detects banned substances in urine for sports antidoping.

The method can measure multiple steroids in human hair to study long-term steroid metabolism, especially in newborns and children.

Certain Egyptian Sabal fruit extracts may help treat anti-androgenic diseases like benign prostatic hyperplasia.

Researchers found markers that can tell if hair has been bleached, which could improve hair test accuracy.

Monitoring steroid hormones in blood can better detect testosterone doping.

A new minoxidil-like substance, triaminodil, was found in an illegal hair growth supplement.

New method measures finasteride in plasma, finds two formulations bioequivalent.

Quick, selective detection of tadalafil and finasteride in human plasma developed.

Researchers found four natural compounds that can change DHT levels in prostate cancer cells.

A new method accurately measures steroid hormones in a few hair strands and could help study chronic stress and hair loss.

The procedure accurately measures 5-alpha-dihydrotestosterone in blood, useful for standard tests.

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 detect illegal chemicals in hair loss products.

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

Researchers found over 40 compounds in Bituminaria bituminosa, including many flavonoids and some with potential for medical and hair care uses.

Microextraction techniques improve hormone testing while being environmentally friendly.

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

About 21% of tested hair loss supplements contained illegal synthetic drugs.

The new LC-MS/MS method is more accurate and reliable than traditional immunoassays for measuring steroids in serum.

Epristeride's metabolism involves key metabolites and proteins, affecting its use in doping tests.

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.

The method reliably profiles eicosanoids and shows epitestosterone reduces their levels, similar to common anti-inflammatory drugs.

Finasteride metabolites found in pigs match human studies, making pigs a valid model for human drug research.

The method accurately measures 19 steroid hormones in human blood and urine using a small sample and is suitable for large-scale monitoring.

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.

The method effectively measures drug impact on DHT levels in prostate treatments.

New methods can detect finasteride's major urinary metabolite in urine for up to 49 hours.

A new method accurately detects bisphenols and parabens in human hair.

A new method can quickly and accurately detect drugs in hair.