3 doctors weighed in:
What will a serotonin blood test show?
3 doctors weighed in

Dr. Joseph Woods
Pathology
2 doctors agree
In brief: Serotonin levels.
This measures the amount of serotonin in your body.
Higher than normal levels may mean carcinoid syndrome. The normal range is 101-283 ng/ml. This has a triad of cutaneous flushing, diarrhea, and valvular heart disease, and occurs in 5% of patients with carcinoid tumors. This is important since patients with this syndrome have a 2.5 year median survival from the first episode of flushing.

In brief: Serotonin levels.
This measures the amount of serotonin in your body.
Higher than normal levels may mean carcinoid syndrome. The normal range is 101-283 ng/ml. This has a triad of cutaneous flushing, diarrhea, and valvular heart disease, and occurs in 5% of patients with carcinoid tumors. This is important since patients with this syndrome have a 2.5 year median survival from the first episode of flushing.
Dr. Joseph Woods
Dr. Joseph Woods
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