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.