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Is the 5-HIAA test and the serotonin test conclusive for detecting a carcinoid tumor?

April 26, 2017carcinoid conclusive detecting Serotonin Test tumor

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Is the 5-HIAA test and the serotonin test conclusive for detecting a carcinoid tumor?

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It is not 100% certain. In fact, the urine 5HIAA test will miss 50% of cases. Therefore other tests are usually done in conjunction with this tests. Among the most common test done for diagnostic purposes are; blood serotonin and blood chromogranin A. Other tests such as substance P, VIP may also be done.