- Created on the 4 March, 2017.
Metanephrine (metaadrenaline) are classified as catecholamines hormone molecules and they can be produced as a metabolite of adrenaline (epinephrine). These hormones are vital in the regulation of blood flow and pressure throughout the body during periods of physical and emotional stress. These metanephrine hormones are useful in detecting tumors such as pheochromocytomas and paragangliomas, since these tumors are found to be producing these hormones in excess. Assays that are currently being used to measure the presence of catecholamine-secreting tumors (pheochromocytomas or paragangliomas) include urine catecholamines, plasma catecholamines, urine metanephrines and plasma free metanephrines. All of these procedures have varying specificity and sensitivity.
Urine metanephrine assays are used to measure the total amount of metanephrines that is released into the urine in a 24 hour period. Due to the fact that the concentrations of this hormone may fluctuate significantly throughout the day, the urine test may be able to detect excess production that could have been missed using the blood test. The current guidelines recommends using either/or both urinary fractionated metanephrines and plasma free metanephrines for initial biochemical testing.
Metanephrine in urine ELISA kit is designed for measuring in vitro quantitative levels of metanephrine (metaadrenaline) in human urine samples. This assay has a minimum detection level of 13.0 ng/ml.
The minimum sensitivity limit of metanephrine (metaadrenaline) using this human metanephrine in urine ELISA kit was approximately 13.0 ng/ml. The dynamic assay range for this kit is 20.0 – 2,-000 pg/ml.
- Consideration of the degree of increase in urine metadrenalines provides superior specificity in the diagnosis of phaeochromocytoma than additional urine catecholamine measurement. Ann Clin Biochem. (2013) 50 (Pt 1): 73-5. Scargill J.J., et al.
- Streamlining the imaging of clinically suspected pheochromocytoma: using urine metanephrines to decrease imaging costs. Can Assoc Radiol J. (2014) 65 (4): 372-8. Stamm M. and Abele J.T.
- Elevated urine metanephrines in catatonia: a forgotten measure? Psychosomatics. (2014) 55 (5): 521-3. Grubisha M., et al.
- Changes in urinary total metanephrine excretion in recurrent and malignant pheochromocytomas and secreting paragangliomas. Ann N Y Acad Sci. (2006) 1073: 383-91. Amar L., et al.
- Urinary free (unconjugated) metadrenalines in different hereditary forms of catecholamine-secreting phaeochromocytoma/paraganglioma. Ann Clin Biochem. (2012) 49 (Pt 5): 486-90. Davidson D.F., et al.
- Full Name: Metanephrine Urine ELISA Kit
- Reactivity: Human
- Sample Type: Urine
- Sensitivity: 13.0 ng/ml