Medications associated with false-positive screening tests
| Class | Name |
|---|---|
| Antihypertensive | Beta-blocker (labetalol, sotalol) Alpha-2 agonist (alpha-methyldopa) Alpha-2 antagonist (phenoxybenzamine) Alpha, beta-1, beta-2 agonist (ephedrine) Calcium channel blocker (dihydropyridines) |
| Stimulant | Caffeine Nicotine Amphetamine Cocaine |
| Anxiolytic | Buspirinone |
| Analgesic | Acetaminophen |
| Anti-inflammatory | Sulfasalazine |
| Antidepressant | Tricyclic antidepressants Monoamine oxidase inhibitors |
| Dopamine agonist | Levodopa |
Based on information in references 3 and 4.