HealthTap Online Primary Care Doctors Accepting New Patients
Book a video visit
HealthTap
Telehealth
A member asked:

I was wondering what are some causes and tests for excessive norpinephrine?

A doctor has provided 1 answer

Pheochromocytoma: Excessive systemic norepinephrine can be caused by a pheochromocytoma (a type of tumor usually found in the adrenal glands). The high norepinephrine levels are suggested by symptoms (high blood pressure, fast heart rate...) and confirmed by laboratory testing of the blood and urine for free metanephrines which are norepinephrine and epinephrine breakdown products.

Dr Kuitems agreed

Answered 5/25/2015

2.8k views

Thank

Related Questions

A member asked:

I drank a lot of water before taking a urine based STD test. Will my excessive water intake dilute the potential bacteria/result and cause false neg?

A doctor has provided 1 answer

A member asked:

I have had heaps of heart tests. Cardiologist says all good. I am getting worse with excessive sweating on minor exertion. What causes this and what tests should I ask for? Thyroid has already been checked?

A doctor has provided 1 answer

A member asked:

Dear Doctor, I am getting thigh pain since 6-7 weeks. The HIV 4th Gen test negetive at 28,35 & 51 days. Can this be caused by excessive stress, sleeplessness ,anxiety & fear of contracting HIV. Will request your kind thoughts & suggestiions,pls help?

A doctor has provided 1 answer

A member asked:

What can cause Vitamin A levels to be high repeatedly in blood tests despite NO vitamin a supplement or multivitamin, no acne creams etc etc. Normal diet. Cannot find the source of the vitamin A excess. thank you?

A doctor has provided 1 answer

A member asked:

Doctor thinks I have stomach ulcers. I don't smoke, drink, or take NSAIDs. Doc made no mention of H. pylori. Should I suggest blood and breath tests? If it's not H. pylori, what else could cause ulcers or is it another issue? Is excess acid possible?

A doctor has provided 1 answer

People also searched for:

Can having excessive amounts of caffeine cause you to fail the visual field test,?
Could panic attacks cause excess levels of catecholamines in urine tests?
Blood test came back low vitamin d. Dr recommends 2000 iu daily 50000 iu weekly. Does that seem excessive? Could low vit d be caused by deposit shot?
What is the reason of excessive foul smelling gas?I had a stool test but it came normal but my stool is very smelly and i have excessive foul gas prob
Excessive use of Painkillers with already damaged liver (0-3), can cause more damage ( more fibrosis) or just elevated chemistry blood tests?

Telemedicine

Primary Care
Manage Your Conditions
Women's Health
Children's Health
Men's Health
Senior Health
Wellness, Prevention & Lifestyle
Sexual Health
Mental & Behavioral Health
Travel Medicine
Urgent Care
Ask your question
Didn't find what you're looking for?

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.

Ask your question

More of what we treat

Allergies
Antibiotics
Asthma
High Blood Pressure
Prescriptions
Type 2 Diabetes
Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.
HealthTap
HIPAA logo
HIPAASecure
Soc 2 Type 2 logo
SOC 2 Type 2Certified
JCAHO Accredited
JCAHOAccredited
Member App

Download HealthTap

Video visit and message your doctor

Member App QR Code
Play Store Member LinkApp Store Member Link

Questions?

+1 (888) 828-0841support@healthtap.com
LinkedInTwitter
HomeTermsPrivacyCookiesDMCAHealth TopicsDoctors DirectoryDoctor Q&A by Specialty
Copyright 2026 HealthTap, Inc.