5hiaa test came back at 6.5. i followed the food restrictions strictly the day of but not before. i did not stop medications which include dostinex, ibuprofen, xanax, (alprazolam) excedrin. should i retake test?

Yes: In most labs, the normal range for 5hiaa is 2 to 8, so 6.5 would be normal. Excedrin contains caffeine, which should not be ingested during the urine collection. It would therefore be reasonable to repeat the test. One could also get a chromogranin a level, and urine serotonin levels, but these are both less sensitive and specific compared to the 5hiaa level.

Up to your doctor: This is very slightly above the reference range and many normal folks will be here. Whether to repeat will depend on your physician's index of suspicion for carcinoid. I would not be surprised if you have some imaging in your future.