Pharmaceutical drugs which can cause false positives in a drug test June 03 2017

This will be handy for those on prescribed drugs.

 

Amphetamine and methamphetamine Amantadine
Brompheniramine
Bupropion
Chlorpromazine
Desipramine
Desoxyephedrine
Ephedrine
Fluoxetine
Isometheptene
Isoxsuprine
Labetalol
Phentermine
Phenylephrine
Phenylpropanolamine
Promethazine
Pseudoephedrine
Ranitidine
Selegiline
Thioridazine
Trazodone
Trimethobenzamide
Trimipramine
Vicks inhalerb
Barbiturates Ibuprofen
Naproxen
Benzodiazepines Oxaprozin
Sertraline
Cannabinoids Dronabinol
Efavirenz
Hemp-containing foods
Ibuprofen
Ketoprofen
Naproxen
Piroxicam
Promethazine
Proton pump inhibitorsc
Sulindac
Tolmetin
Cocaine Amoxicillin
Coca leaf teas
Tonic water
Methadone Chlorpromazine
Clomipramine
Diphenhydramine
Doxylamine
Ibuprofen
Quetiapine
Thioridazine
Verapamil
Opiates Dextromethorphan
Diphenhydramine
Fluoroquinolonesa
Poppy seeds and oil
Rifampin
Quinine
Phencyclidine Dextroamphetamine
Dextromethorphan
Diphenhydramine
Doxylamine
Ibuprofen
Imipramine
Ketamine
Meperidine
Thioridazine
Tramadol
Venlafaxine
Tricyclic antidepressants Carbamazepine
Cyclobenzaprine
Cyproheptadine
Diphenhydramine
Hydroxyzine
Quetiapine
Lyseric acid diethylamine (LSD) Amitriptyline
Dicyclomine
Ergotamine
Promethazine
Sumatriptan

a Ciprofloxacin, levofloxacin, and ofloxacin.

b Vicks inhaler due to l-methamphetamine content interfered with older immunoassays; interference has not been seen with new enzyme multiplied immunoassay tests (EMIT).

c Pantoprazole.

 

 

References

1. Standridge JB, Adams SM, Zotos AP. Urine drug screen: a valuable office procedure. Am Fam Physician. 2010;81(5):635-640.

2. Moeller KE, Lee KC, Kissack JC. Urine drug screening: practical guide for clinicians. Mayo Clin Proc. 2008;83(1):66-76.

3. Quest Diagnostics. Standard urine testing for drug and alcohol abuse. www.questdiagnostics.com/employersolutions/standard_urine_testing_es.html

Accessed Nov 11, 2010.

4. Vincent EC, Zebelman A, Goodwin C. What common substances can cause false positives on urine drug screens for drugs of abuse? J Fam Pract. 2006;55(10):893-894, 897.

5. Brahm NC, Yeager LL, Fox MD, Farmer KC, Palmer TA. Commonly prescribed medications and potential false-positive urine drug screens. Am J Health-Syst Pharm. 2010;67(16):1344-1350.

6. Holtorf K. Ur-ine Trouble. Scottsdale, AZ: Vandalay Press; 1998.

7. Woelfel JA. Drug abuse urine tests: false-positive results. Pharmacist's Letter/Prescriber's Letter. 2005;21(3):210314.