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Does 5-FU effect the 5-HIAA test?

Submitted by carcinoid@opton... on Sat, 06/26/2010 - 10:46am
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5-FU is a form of chemotherapy. It might shrink a carcinoid and hence lower 5-HIAA in the urine, but it also can cause a transient increase in 5-HIAA since more is released temporarily by decaying tumors. However, the drug itself does not interfere with the 5-HIAA test.

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