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Metanephrines
Metanephrins are metabolic products of cathecolamines: epinephrin and norepinephrin and can be used to diagnose excess production of these adrenal/sympathetic hormones. They can be measured in blood and urine and are very elevated in a condition called pheochromocytoma which is a tumor found mostly in the adrenal glands that causes severe hypertension.
Dr. Eduardo Haddad reviewed this
48 year experience in Nephrology and Dialysis
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A 37-year old asked:
Can you explain metanephrines?
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A 21-year old asked:
What makes the plasma metanephrine test different?
1 doctor answer • 5 doctors weighed in
A 28-year old male asked:
What is the definition or description of: metanephrines?
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A 22-year old asked:
What substances interfere with the plasma metanephrine test?
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A 34-year old female asked:
What does it mean if my metanephrines are low and 5-hiaa is high?
1 doctor answer • 1 doctor weighed in
A 58-year old female asked:
Should I redo the plasma metanephrine test if I took high doses of 5HTP?
1 doctor answer • 1 doctor weighed in
A 42-year old female asked:
3 weeks post total thyroidectomy and metanephrine study was mildly elevated. Is this anthing to be worried about?
1 doctor answer • 1 doctor weighed in
A 42-year old female asked:
8 days post total thyroidectomy, total plasma metanephrine 301, normeta 237 and free metanephrine 64? Anything to worry about?
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A female asked:
What does it mean when the metanephrine level is 23 on a 24 hour urinalysis?
1 doctor answer • 1 doctor weighed in
A 25-year old female asked:
What could a plasma metanephrines blood test mean if it is slightly elevated?
1 doctor answer • 2 doctors weighed in
A 21-year old asked:
Should the urine tests still be performed even though the plasma free metanephrine has been done?
2 doctor answers • 6 doctors weighed in
A 56-year old female asked:
If mteanephrine,fractionated 24hrurine came back abnormal, what is the likehood that the metanephrine,fractionated blood test will be abnormal to?
1 doctor answer • 1 doctor weighed in
A 56-year old female asked:
My metanephrines infractionated test came back abnormal. Now I have to go have a metanephrines infractionated blood test done. What will show up?
1 doctor answer • 1 doctor weighed in
A 21-year old asked:
Can you explain the relationship between catecholamines and metanephrines?
2 doctor answers • 5 doctors weighed in
A 42-year old female asked:
Free metanephrine 64, total plasma metanephrine 301 and normetanephrine 237. 3 weeks post total thyroidectomy. Anything to worry about?
1 doctor answer • 2 doctors weighed in
A 30-year old female asked:
What other conditions can mimic pheochromocytoma? Catecholamines and metanephrines were normal, but i still have all symptoms. Extremely scared.
1 doctor answer • 1 doctor weighed in
A 37-year old female asked:
Creatinine Rand Ur. 86.9 mg/dL Normetanephrine U 440 ug/L Metanephrine U. 78 ug/L Metaneph/Creat Ratio 0.6 ug/mg. can someone interpret these results please? testing for Metanephrines Pheochromocyt?
1 doctor answer • 2 doctors weighed in
A 37-year old female asked:
Can someone please help me understand these results please? creatinine rand. ur 86.9 mg/dl, normetanephrine u 440 ug/l 1, metanephrine u. 78 ug/l 2, and metaneph/creat ratio 0.6 ug/mg creat 3. thank u so much?
1 doctor answer • 2 doctors weighed in
A 38-year old female asked:
Doctor testing for acth, cortisol, catecholamines, and metanephrine. What is he checking for?
1 doctor answer • 1 doctor weighed in
A female asked:
What does a low metanephrine count mean in a 24 hour urine test?
1 doctor answer • 2 doctors weighed in
A 43-year old asked:
Renin , aldosterone , metanephrine and normetanephrine tests tells you what?
1 doctor answer • 1 doctor weighed in
A 43-year old asked:
Renin , aldosterone , metanephrine and normetanephrine tests indicates what kind of condition?
1 doctor answer • 2 doctors weighed in
A 27-year old female asked:
Would my drinking a lot of water be more likely to cause a false posit or f.Neg, during 24hrurine:catecholamine?Metanephrine &normetane? Creatinine?
2 doctor answers • 4 doctors weighed in
A 27-year old male asked:
What does it mean if my Metanephrines Total (244) and Nor/Epinephrines Totals (107) are Elevated in my urine? I just got an email from the lab that ran these tests.
1 doctor answer • 2 doctors weighed in
A 56-year old female asked:
My metanephrine free urine was 51, blood test was 63, normetanephrine free urine 181, blood test 150- total urine 232, blood test 213. Normal?
1 doctor answer • 2 doctors weighed in
A 52-year old female asked:
I have had blood work my Normetanephrine, Plasma is 301, Reference range 0-145 and my Metanephrine, Plasma is < 10, Reference range: 0-62.Any thoughts
1 doctor answer • 2 doctors weighed in
A 57-year old female asked:
946 norepinephrine, below 10 epinephrine, 27 metanephrine should I be concerned of these results.
2 doctor answers • 4 doctors weighed in
A 21-year old asked:
What are the advantages of the plasma free metanephrine blood test over the standard urine tests for pheochromocytoma?
1 doctor answer • 2 doctors weighed in
A 27-year old female asked:
Stopped going to old doc but just got labs back from 8mos ago. Random urine metanephrine/creatinine was .5 mcg/mg crt. No ref range provided. Normal?
1 doctor answer • 3 doctors weighed in
A male asked:
I have to start a 24 hour Metanephrines urine test today. If I was drinking beer last night will it effect the results?
1 doctor answer • 1 doctor weighed in
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