A member asked:

24 hour urine catecholamine for a pheo- if a person does not have an episode during the 24 hours would it still show elevated levels. if so how?

A doctor has provided 1 answer
Dr. Philip Kern answered

Specializes in Endocrinology

Usually, yes: A pheo usually secretes catecholamines continuously, so it is not usually necessary to time the collection. These catecholamines yield a lot of breakdown products (eg. metanephrines). However, in some circumstances, if there is a very high suspicion for pheo and the initial tests are negative, and the attacks are sporadic, a urine collection timed with the episode is reasonable.

Answered 3/22/2015

3.1k views

Thank

Related Questions

A member asked:

What if the results are negative in the 24 hour catecholamine urine test?

7 doctors weighed in across 2 answers

A member asked:

Why would a doctor order a 24 hour urine for catecholamines test?

7 doctors weighed in across 3 answers