This study reported that analyzing hair cortisol levels using a validated online SPE LC-MS method provided a way to assess long-term hormone secretion in 114 healthy volunteers, with a median hair cortisol value of 4.76 pg/mg.
51 citations
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February 2010 in “Analytical and Bioanalytical Chemistry” Researchers developed a method to detect hormone-blocking drugs in wastewater and found them in Beijing's sewage, suggesting they can survive sewage treatment.
9 citations
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February 2018 in “Journal of Pharmaceutical and Biomedical Analysis” This study validated a highly selective and fast LC–MS/MS method for accurately measuring levels of tadalafil and finasteride in human plasma, adhering to international bioanalytical guidelines.
6 citations
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September 2014 in “Food Additives & Contaminants: Part A” This study developed a new method for detecting 30 hormones in anti-aging functional foods, demonstrating good sensitivity and reliability, and identified seven hormones in four out of 14 samples tested.
November 2025 in “Journal of Laboratory Medicine” This study found that cortisol levels, a biomarker of chronic stress, significantly increased in the post-COVID-19 lockdown period compared to pre-lockdown and during-lockdown periods, especially among females and young adults, reflecting sustained psychological stress from the pandemic.
