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Accurate quantitative bioanalysis using LC-MS/MS is challenging due to matrix effects, but using internal standards and new methods like in-sample calibration could improve results.

The study found that minor protein differences between curved and straight Japanese hair are unlikely to significantly affect hair structure.

Method detects finasteride in plasma at very low concentrations.

A new, quick method was developed to analyze skin lipids, discovering a new ceramide subclass.

New method measures finasteride in blood quickly and accurately.

Researchers developed a method to measure plant compounds in rat blood and found they are quickly absorbed and eliminated within 36 hours.

Researchers developed a new method to find substances in herbs that can block a specific enzyme linked to hair loss.

A new method was created to measure metformin in hair, showing potential for monitoring treatment and medical investigations.

Method measures latanoprost and minoxidil in skin accurately and precisely.

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

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

New method effectively detects illegal hormones in anti-aging foods.

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

The conclusion is that a new method can measure caffeine and drugs in hair, finding caffeine abusers have 70 times more caffeine than normal, with a proposed cut-off value for abuse.

Researchers created a reliable method to detect hair-growth substances in products.

A reliable method was developed to measure Finasteride and Tadalafil in rat blood.

A new method accurately measures three compounds in rat plasma from pine needle extracts, aiding future research on its use for hair loss.

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

Sansevieria trifasciata Prain shows promise for treating hair loss by inhibiting androgen receptors.

The method accurately measures hormones and endocannabinoids in mice, showing gut microbiota diversity affects these levels and may influence stress and reproductive systems.

Using 5-butylpicolinate esters improves the sensitivity and reliability of detecting testosterone and dihydrotestosterone in saliva.

Researchers developed a quick and sensitive method to identify and measure hair growth-promoting substances in a herbal mix.

Different types of skin on mice have unique chemical profiles related to how they grow and react to stress.

Finasteride's stability and safety confirmed through precise analytical methods.

Researchers identified new compounds in Platycladi Cacumen and found variations in its flavonoid content, which could aid in its quality control.

The new method accurately detects illegal hair-growth drugs in dietary supplements.

The research found that anovulatory young women have higher androgen and hormone levels than those who ovulate, suggesting immature hormonal regulation rather than a specific condition.

Researchers found potential urine markers for polycystic ovary syndrome, including testosterone-glucuronide and 11α-hydroxyprogesterone, which may help diagnose the condition.

Found different proteins in balding and non-balding cells, giving insight into hair loss causes.