机译:Simple, rapid, and cost-effective microextraction by the packed sorbent method for quantifying of urinary free catecholamines and metanephrines using liquid chromatography-tandem mass spectrometry and its application in clinical analysis
Catecholamines; Metanephrines; Microextraction by packed sorbent; Liquid chromatography-tandem mass spectrometry; Human urine samples; Pheochromocytoma and paraganglioma;