metanephrine

(redirected from methoxyepinephrine)
Also found in: Dictionary, Encyclopedia.

metanephrine

 [met″ah-nef´rin]
a urinary metabolite of epinephrine.

met·a·neph·rine

(met-ă-nef'rin),
A catabolite of epinephrine found in the serum, urine and in some tissues, resulting from the action of catechol-O-methyltransferase on epinephrine; has no sympathomimetic actions; 3-O-methylepinephrine.

metanephrine

/meta·neph·rine/ (-nef´rin) a metabolite of epinephrine excreted in urine and found in certain tissues.

metanephrine

[met′ənef′rin]
one of the two principal urinary metabolites of epinephrine and norepinephrine in the urine, the other being vanillylmandelic acid. The 24-hour normal adult value for total metanephrine is 1.3 mg.

metanephrine

Any exogenous or endogenous catecholamine metabolite excreted in the urine (normal adults, 0.03–0.69 mmol/mol creatinine). Metanephrines are elevated in neuroblastoma, pheochomocytoma, metastases, stress and sepsis.
 
False positive elevation
High dietary intake of bananas, or therapy with chlopromazine, corticosteroids, l-dopa, dopamine, guanethidine, hydralazine, imipramine, nalidixic acids, phenobarbital, phenylephrine, or tetracycline.
 
False negative reduction
Clonidine, guanethidine, propranolol, reserpine.
 
Ref range
24–288 µg/24 hours; US, 0.05–1.2 mg/24 hours.
 
Specimen
24-hour urine.
 
Method
HPLC.

metanephrine

Methoxyepinephrine Lab medicine Any exogenous or endogenous catecholamine metabolite excreted in the urine; metnephrines ↑ in neuroblastoma, pheochomocytoma, metastases, stress, sepsis

met·a·neph·rine

(met'ă-nef'rin)
A metabolite of epinephrine, excreted in the urine and found in some tissues.

met·a·neph·rine

(met'ă-nef'rin)
A catabolite of epinephrine found in the serum, urine, and some tissue types, due to action of catechol-O-methyltransferase on epinephrine.

metanephrine

(met´ənef´rin),
n one of the two principal urinary metabolites of epinephrine and norepinephrine in the urine, the other being vanillylmandelic acid.

metanephrine

a urinary metabolite of epinephrine.