Question 1

what could cause/explain significantly (4.5x norm rang)elevated plasma norepinephrine levels in blood test , but normal urinary norepinephrine levels?

Accepted Answer

Several things: Including daily doses of snri's  --         medications used to treat depression. See your doctor; the evaluation can be complex.

Question 2

what could cause/explain significantly elevated (4.5x the norm range)plasma norepinephrine in blood test, but normal urinary norepinephrine levels?

Accepted Answer

Normal variation: Plasma levels vary with rate of production and rate of excretion.  Hormone levels vary a great deal in production by stress and by time of day and by medication effects.  Rate of excretion depends on liver metabolism and clearance by the kidney.  Kidney clearance may be normal but will eventually clear the hormone over time.  High serum level means high production by some uncertain cause.

Question 3

are epinephrine and norepinephrine prodominantly exciditory or inhibitory, and how do they affect blood pressure?

Accepted Answer

Excitatory: They increase bp    most of time

Question 4

i read that norepinephrine reduces brain blood flow. does snri do that also?

Accepted Answer

Not in real life: Norepinephrine has been shown to alter blood flow in brain experimentally when blood brain barrier was bypassed, which does not happen in real life as brain protects itself. You are safe taking snri.

Question 5

does low blood pressure cause norepinephrine and epinephrine to be created to raise blood pressure, or am i way off?

Accepted Answer

You're right: Hi. Blood pressure sensors in parts of the aorta and carotid arteries sense low BP and reflexly activate the sympathetic nervous system to help maintain/restore BP, part of which involves adrenomedullary catecholamine secretion.

Question 6

what are norepinephrine and epinephrine's effects on heart rate, blood pressure, vasoconstriction, sensitivity to pain, and heat production.

Accepted Answer

EPI: It increases heart rate and blood pressure (sometimes dangerously). It causes vasoconstriction. Variable effect on pain but generally increases sensitivity and because it ramps up your metabolism it increases heat production.  Follow your docs instructions very carefully and don't freelance.

Question 7

i am a 70 year old femal,pulse is 90. my blood pressure and cholesterol are normal.i take pristiq which has norepinephrine.my recent ekg said this: normal sinus rhythm, possible left atrial abnormality. should i be concerned?

Accepted Answer

: Nothing to be concerned . Good Luck

Question 8

risk of having low blood level?

Accepted Answer

Need more info: If you have heavy periods you are at risk for low blood iron and hemoglobin and should take iron supplement. 
For good health - Have a diet rich in fresh vegetables, fruits, whole grains, low fat milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco or alcohol in any form. 
Practice safe sex. 
Get HPV vaccine.

Question 9

normal sugar blood level?

Accepted Answer

100mg/dL or less: Physicians measure patient's fasting blood glucose. This is the blood sugar taken when the patient hasn't had food or drink for at least 8 hours. "normal" is considered to be 100mg/dl or less. There is a little leeway before a level is high enough to raise concern and necessitate intervention though. A non-fasting blood sugar - or random should be less than 150... Especially 2 hours after you eat.

Question 10

is 8.2 calcium blood level low ?

Accepted Answer

Yes: While not dangerously low, 8.2 is slightly below most reference ranges of low normal.  Supplements and retesting are reasonable starting points for you.

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Doctor answers about:

Norepinephrine blood level

A member asked:

What could cause/explain significantly (4.5x norm rang)elevated plasma norepinephrine levels in blood test , but normal urinary norepinephrine levels?

A member asked:

What could cause/explain significantly elevated (4.5x the norm range)plasma norepinephrine in blood test, but normal urinary norepinephrine levels?

A member asked:

Are epinephrine and norepinephrine prodominantly exciditory or inhibitory, and how do they affect blood pressure?

A member asked:

I read that norepinephrine reduces brain blood flow. does snri do that also?

A member asked:

Does low blood pressure cause norepinephrine and epinephrine to be created to raise blood pressure, or am i way off?

A member asked:

What are norepinephrine and epinephrine's effects on heart rate, blood pressure, vasoconstriction, sensitivity to pain, and heat production.

A member asked:

I am a 70 year old femal,pulse is 90. my blood pressure and cholesterol are normal.i take pristiq which has norepinephrine.my recent ekg said this: normal sinus rhythm, possible left atrial abnormality. should i be concerned?

A member asked:

Risk of having low blood level?

A member asked:

Normal sugar blood level?

A member asked:

Is 8.2 calcium blood level low ?

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