Pharmaceutical drugs which can cause false positives in a drug test February 15 2014

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.