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"5-METHOXYTRYPTAMINE" OR ACETYLCHOLINE OR DOPAMINE OR ".GAMMA.-AMINOBUTYRIC" ACID OR HISTAMINE OR LEVODOPA OR MELATONIN OR NOREPINEPHRINE OR PHENETHYLAMINE OR SEROTONIN OR TAURINE OR TYRAMINE
- Catecholamine tests check for levels of dopamine, norepinephrine, and epinephrine in urine or blood. High levels can indicate certain types of rare tumors. Learn more.
