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The 39th Manfred Donike Workshop discussed methods for detecting misuse of steroids, gene doping, and the complexity of identifying drug residues in urine, highlighting the ongoing efforts to improve global anti-doping work.

A new method was developed to measure and assess the activity and inhibition of the enzyme steroid 5α-reductase.

A PEG-400/oleic acid mixture best improves drug delivery monitoring through hair follicles.

Both a lock of hair and a single hair strand can show chronic drug use, but at least six single hairs are needed for accurate results.

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

Adhesive tape impression is a useful tool for diagnosing dermatophytosis in dogs and cats.

Researchers created a reliable method to measure dexpanthenol and resorcinol in hair products.

Cosmetic residues on individual hairs can be identified and differentiated using ATR FT-IR microspectroscopy.

New method accurately measures finasteride in tablets and bulk.

THCCOOH levels in hair decrease from root to tip and don't match well with self-reported cannabis use.

K6/ODC transgenic mice are effective for quickly identifying cancer-causing chemicals.

The "Two-Cell Assemblage" assay is a new, simple method to identify substances that may promote hair growth.

A new method was created to accurately measure minoxidil and aminexil in hair loss treatments.

Polarity Analysis with Calcarea Carbonica may effectively treat alopecia areata with fewer side effects.

Aqueous dispersion resin is safe to inhale at levels below 30 mg/m³.

The MPA-ISO cocrystal improved solubility and dissolution rate, while the others did not.

Researchers developed a precise method to detect illegal hair-growth drugs in dietary supplements.

APIs' stability is influenced by crystalline forms, pressure, and water.

A new method accurately measures minoxidil and finasteride in medicines.

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

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

The treatment process effectively removes many pollutants from cosmetics wastewater, but more research is needed to improve it.

The document concludes that measuring γ-glutamyl transpeptidase activity is more accurate with a higher substrate concentration and using diluted acetic acid to stop the reaction.

A new accurate method was developed to measure Minoxidil and Aminexil in solutions.

A new method accurately measures minoxidil and aminexil in drugs.

A reliable method was developed to measure minoxidil in hair products.

The engineered yeast strain BLYAS can quickly and sensitively detect androgenic chemicals.

Validated method reliably measures finasteride in tablets using liquid chromatography.

Best results found using acetonitrile, water, and trifluoroacetic acid or methanol mixture.