WebDifferences in sensitivity or specificity between measurements of plasma metanephrines and the other biochemical tests used for the diagnosis of pheochromocytoma were assessed with use of McNemar ... WebPlasma metanephrines in renal failure Plasma concentrations of free metanephrines are relatively independent of renal function and are, therefore, more suitable for diagnosis of pheochromocytoma among patients with renal failure than …
Diagnosis and Localization of Pheochromocytoma Hypertension
Web9. okt 2015 · In the pediatric cohort, seven patients had preoperative values for metanephrines and catecholamines at our institution within 1 year before pheochromocytoma surgery. All pediatric patients had elevated preoperative serum and/or urinary normetanephrine levels and 86% ( 6 ) had at least two times the ULN. Web15. mar 2004 · Pheochromocytomas are rare but clinically important tumors of chromaffin cells that take up, produce, store, release, and metabolize catecholamines. Pheochromocytomas usually—but not always—manifest clinically as hypertension, which can be sustained or paroxysmal. ear wax menopause
Plasma or serum, which is the better choice for the ... - PubMed
WebThe sensitivity of measurements of plasma normetanephrine and metanephrine for the diagnosis of pheochromocytoma was 97 percent, a sensitivity significantly higher than that for plasma ... Web20. mar 2002 · The present study confirms the findings of several other reports that measurements of plasma free metanephrines or urinary fractionated metanephrines offer higher sensitivity for diagnosis of pheochromocytoma than measurements of plasma or urinary catecholamines or of urinary total metanephrines or VMA. 8,9,11,14,16 Our … WebMetanephrines, Fractionated, 24 Hour, Urine Useful For A first- and second-order screening test for the presumptive diagnosis of catecholamine-secreting pheochromocytomas and paragangliomas Confirming positive plasma metanephrine results Special Instructions Urine Preservatives-Collection and Transportation for 24-Hour Urine Specimens Method Name earwax meaning