Tormey, Enzyme-linked immunoassay for plasma-free metanephrines in the biochemical diagnosis of phaeochromocytoma in adults is not ideal, Clin. Chem. Lab. Med. 50 (1) (2012) 105-110.F. Mullins, P. O'Shea, R. FitzGerald, W. Tormey, Enzyme-linked immunoassay for plasma-free metanephrin...
Simultaneous measurements of all parameters analyzed at the central lab of our university hospital was mandatory for inclusion. Sensitivity of P-MNs (94.4%) was similar to that of U-MNs (100%), and both were higher than of U-CATs (77.8%), specificity of P-MNs (100%) higher than of U...
Of note, metanephrine (M) and normetanephrine (NM), the products of epinephrine and norepinephrine metabolism by COMT, were suggested to have a higher step-up between adrenal veins and inferior vena cava plasma than cortisol [5,6]. Likewise, 17α OH-progesterone, the product of 17 α-hy...