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A simple test that measures free cortisol levels in saliva at midnight — called a midnight salivary cortisol test — showed good diagnostic performance for Cushing’s syndrome among a Chinese population, according to a recent study. The test was better than the standard urine free cortisol levels and may be an alternative for people with end-stage kidney disease, in whom measuring cortisol in urine is challenging. The study, “Midnight salivary cortisol for the diagnosis of Cushing’s syndrome in a Chinese population,” was published in Singapore Medical Journal. Cushing’s syndrome,
The ratio between adrenocorticotropic hormone levels and cortisol levels in the blood is higher among Cushing’s disease patients than in healthy people, a new study has found, suggesting that measurement could be used to help diagnose the disease. Also, higher values at diagnosis could predict if the disease will recur and indicate larger and more invasive tumors. The research, “The Utility of Preoperative ACTH/Cortisol Ratio for the Diagnosis and Prognosis of Cushing’s Disease,” was published in the Journal of Neurosciences in Rural Practice. Cushing’s syndrome (CS) is characte