Substances that interfere with determination of urinary 5-HIAA

Falsely high values

Tryptophan-rich foods: avocados, pineapples, bananas, kiwi fruit, plums, eggplants, walnuts, hickory nuts, pecans, tomatoes, plantains, butternut squash

Drugs: acetaminophen, coumaric acid, guaifenesin, mephenesin, phenobarbital, reserpine, acetanilid, ephedrine, methamphetamine, nicotine, phentolamine, phenmetrazine, caffeine, fluorouracil, melphalan, methocarbamol, phenacetin, mesalamine

Falsely low values

Drugs: corticotrophin, ethanol, imipramine, levodopa, MAO inhibitors, phenothiazines, aspirin, isoniazid, gentisic acid, methenamine, streptozotocin, heparin, methyldopa

5-HIAA: 5-hydroxyindoleacetic acid; MAO: monoamine oxidase.

Reference:

Corcuff J, Chardon L, El Hajji Ridah I, Brossaud J. Urinary sampling for 5HIAA and metanephrines determination: revisiting the recommendations. Endocr Connect 2017; 6:R87.

Graphic 79968 Version 7.0

خرید پکیج

Substances that interfere with determination of urinary 5-HIAA