Table 4.

Drugs that may interfere with monoamine measurement

Metabolites precursors or monoamines

3,4-dihydroxyphanylalanine (L-DOPA)/carbidopa, 5-hydroxytryptophan (5-HTP), dopamine

Monoamine oxydase (MAO) inhibitors

hydrazines, nialamide, isocarboxazid, bifemelane, pirlindole, toloxatone, rasagiline, selegiline, moclobemide, tranylcypromine, phenelzine, safinamide

Cathecol-O-methyltransferase (COMT) inhibitors

entacapone, tolcapone

Reuptake inhibitors

fluoxetine, citalopram, fluvoxamine, paroxetine, sertraline, venlafaxine, amantadine

Others

diazepam, chlorpromazine, pyridoxine, pyridoxal-5-phosphate, sapropterin, physostigmine, propranolol, phenotiazine, valproate, vigabatrin, 4-hydroxybutirrate, anticholinergic drugs

In some cases, drug interference is based on experimental models or mechanism of drug action.

No data are available on dopamine agonist drugs.