False positives

False Positives
Caldecon - false positive for Amphetamines, Morphine (Ref: 1, 2, 7,) Capital and Codeine Oral Solution - false positive for Opioids (Ref: 3, 18) Captagon® metabolizes to amphetamine (Ref: 18) Cathne - false positives for Amphetamines, Meth and Ecstasy (MDMA) (Ref: 3, What is a false positive? It is a test result that is returned when a substance tests positive for another compound. It is a case of mistaken identity. For example if you eat a couple poppy seed cakes before testing, you can get a positive result Cheracol Sinus - false positive for Amphetamines (Ref: 3) Chlordiazepoxide contains benzodiazepines (Ref: 18) Chiorpromazlne - False-Positive for Amphetamine (Ref: 22, 26) The chances of you getting a false positive depends on the quality of the Chlorpromazine - False positive for Opiates (Also false for pregnancy) (Ref: 23, laboratory that does the testing. There seems to be about 1,200 of these labs in the United States currently testing for drugs. Less than a 100 of these meet Cipro (antibiotic) - false positives for opiates (Ref: 25, 32) federal standards and most of the individual states do not regulate drug test labs. The number of false positives returned range from 4% to over 50%, depending Clinoril - False positive for THC, Marijuana (Ref: 3, 18) Clobenzorex - false positives for Amphetamines and Ecstasy (Ref: 3, 11, 18) Clonazepam contains benzodiazepines (Ref: 18) A concern here is that, if your company tests for drug usage, they are probably Codeine - false positives for Amphetamines (Ref: 14) not required to use a certified drug testing lab, which means you have a greater Codeine - will test positive (not false) for opiates (Ref: 20) Coffee-Break - False positive for Morphine (Ref: 1) Listed below are products reported to cause a false positive drug test result. With Cold remedies with dextromethorphan - positive for opiates (heroin) (Ref: 21) your help, this will grow into a comprehensive list. Last updated, January 2, Combivent inhaler - false positive for meth in urine tests (Ref: 19) Comtrex - false positive for Opioids (Ref: 3) Concerta - false positive for meth in urine tests (Ref: 19) Contac - false positive for Amphetamines, Morphine (Ref: 1, 7, 20) Substances that cause false positives
Contact - false positives for Amphetamines, Meth and Ecstasy (Ref: 2, 3, 7, 11, 4-Way Nasal Spray - false positive for Amphetamines, Morphine (Ref: 1, 2, 7) Contact Non-Drowsy Formula Sinus Caplets - false positive for Amphetamines Accutrim - False positive for Ecstasy (MDMA), Meth (Ref: 11, 16, 18) Acetaminoph w/codeine - false positive for Morphine (Ref: 1) Control - False positive for Morphine (Ref: 1) Acet-AM - False positive for Amphetamines, Heroin, Opiates (Ref: 1) Cough medicines - See if any ingredients are on this list (Ref: 6, 20) Acro-Lase Plus® contains barbiturates (Ref: 18) Cough suppressants with Dextromethorphan (DXM) - false positive for Heroin A.P.C. w/codeine - False positive for Morphine (Ref: 1) A.R.M. - false positive for Amphetamines (Ref: 3, 18) Cramp End Tablets - False positive for THC, Marijuana (Ref: 3, 18) Actifed - false positive for Amphetamines (Ref: 2, 3, 7, 18) Cylert - false positives for Amphetamines and Ecstasy (Ref: 3, 11) Actifed with Codeine Cough Syrup® (Ref: 18) Dalmane® contains benzodiazepines (Ref: 18) Adderall® - is an amphetamine, positive for Meth (Ref: 2008 PDR, 18, 19) Datril - false positives for Marijuana (Ref: 1) Advil - False positive for THC, Marijuana (Ref: 1, 14, 16, 18, 20, 26, 29) (Ref. 22 Darvon® contains synthetic opiates (Ref: 18) Daypro - false positives for benzodiazepines (Ref: 34) Afrin - False positive for Ecstasy (MDMA), Meth (Ref: 3, 11, 16, 18) Aleve - False positive for THC, Marijuana (Ref: 3, 16, 18) Demerol - tests positive for opiates (Ref: 26, 29) Alka-Seltzer - false positive for Amphetamines (Ref: 2, 7) Deprenyl - false positives for Amphetamines and Ecstasy (Ref: 3, 11, 18) Alka-Selzer Plus - false positive for Amphetamines, Morphine (Ref: 1, 2, 7) Allerest - false positive for Amphetamines, Ecstasy, Meth and Morphine (Ref: 1, Desoxyephedrine - false positive for Amphetamines and Ecstasy (Ref: 3, 11, 18) Desoyn® contains d-methamphetamine (Ref: 18) Alprazolam contains benzodiazepines (Ref: 18) Det aids with phenylpropanolamine (Dexatrim, Accutrim) - false positive for Dexatrim - False positive for Ecstasy (MDMA), Meth (Ref: 3, 11, 16, 18) Amesec - False positive for Amphetamines, Heroin, Opiates (Ref: 1) Dexdenfluramine - false positive for Amphetamines and Ecstasy (Ref: 3, 11) Amfepramone - False positive for Amphetamines, Ecstasy (MDMA), Meth (Ref: 3, Dexedrine is an Amphetamine (Ref: 3, 11, 18) Dexfenfluramine - false positive for Amphetamines (Ref: 3, 11) Amifepramone - false positive for Amphetamines and Ecstasy (Ref: 3, 11) Dextroamphetamine - false positive for Amphetamines (Ref: 3) Amineptine - false positive for Amphetamines and Ecstasy (Ref: 3, 11, 18) Dextromethorphan hydrobromide or DXM - False positives for amphetamines Amitriptyline - false positive for LSD (Ref: 3) Amogel PG® contains opium/morphine (Ref: 18) Dextromethorphan - False positive for Heroin, Opiates, Morphine (Ref: 1, 3, 16, Amoxicillin - False positive for cocaine (Ref: 13, 16, 18, 20, 21, 26, 29) Ampicillin - false positive for cocaine (Ref: 29) DHEA - false positive for anabolic steroid use (Ref: 13) Amphetaminil metabolizes to amphetamine (Ref: 18) Diabetes - False positives for Amphetamines, Cocaine, THC, Ecstasy, Meth and Ampicin - can cause false positive for opiates (Ref: 20) Anaprox - False positive for THC, Marijuana (Ref: 1, 3, 18 Diabismul® contains opium/morphine (Ref: 18) Ansaid - false positive for marijuana (Ref: 3) Diasepam - false positive for PCP (Ref: 29) Anti Anxiety medication, most - false positive for benzodiazepines (Ref: 3) Diazepam (generic name for Valium) - contains benzodiazepines (Ref: 18, 20, 26) Anti Inflammatories such as Naproxyn (Ref: 26) Antiasthmatics that contain phenobarbitol - false positive for barbiturates (Ref: 3) Didrex - false positive for Amphetamines (Ref: 3, 11) Antibiotics - False positives for Heroin, Cocaine (Ref: 13, 18, 20) Diet aids with phenylpropanolamine (Dexatrim, Accutrim) - false positive for Antrocol Elixor® contains barbiturates (Ref: 18) Apo-Naproxen - False positive for THC, Marijuana (Ref: 1) Dietac - False positive for Morphine (Ref: 1, 2, 7) Artane - false positive for LSD (Ref: 3) Dihyrocodeine contains synthetic opiates (Ref: 18) Ascriptin w/codeine - False positive for Morphine (Ref: 1) Dilantin - false positives for Barbiturates (Ref: 3, 20) Dilaudid® contains synthetic opiates (Ref: 18) Asthma medications - false positives for Amphetamines and Ecstasy (Ref: 20, 21) Dimetane-DC Cough Syrup ® contains codeine (Ref: 18) Astramoprh PF ® contains morphine (Ref: 18) Dimetapp - false positive for Morphine, Meth, Ecstasy (Ref: 1, 2, 7, 11, 16, 18) Ativan® contains benzodiazepines (Ref: 18) Dimethylamphetamine metabolizes to methamphetamine and amphetamine (Ref: B2 vitamin - False positive for THC (Ref: 21) Bayer Select Maximum Strenght Sinus Pain Relief Caplets - false positive for Dietac - false positive for Amphetamines (Ref: 7) Dimetapp - false positive for Amphetamines (Ref: 3, 7) Bayer Select Pain Relief Formula - False positive for THC, Marijuana (Ref: 3, 18) Dinintel® metabolizes to amphetamine (Ref: 18) Bentyl® - false positive for LSD (Ref: 3, 18) Diphenhydramine - false positive PCP results (Ref: 24) Benylin - false positive for Opioids (Ref: 3) Doco children's cough syrup - false positive for Opioids (Ref: 3) Dolobid - False positive for THC, Marijuana (Ref: 3, 18) Dolophine® contains synthetic opiates (Ref: 18) Benzphetamine - false positives for Amphetamines and Ecstasy (Ref: 3, 11, 18) Donnagel-PG ® contains opium/morphine (Ref: 18) Biphetamine® for Amphetamines (Ref: 18) Donnatal® contains barbiturates (Ref: 18) Black Pearls (Tung Sheuh pills) contain benzodiazepines (ref: 32) Donnatol (for irritable bowel syndrome) - false positive for barbiturates (Ref: 3) Broncholate CS contains codeine (Ref: 18) Dormonocet® contains benzodiazepines (Ref: 18) Dristan Cold caplets - false positive for Amphetamines (Ref: 3) Bromocription - false positive for LSD (Ref: 3) Dristan Cough Formula - false positive for Heroin, Opiates, Morphine (Ref: 1, 18) Bromphenlramlne - False-Positive for Amphetamine (Ref: 22) Dristan Nasal Spray - false positive for Amphetamines (Ref: 26, 29) Bronkaid - False positive for Amphetamines, Heroin, Opiates, Ecstasy, Meth (Ref: Drixoral Cold and Flu - false positive for Amphetamines (Ref: 3, 18) Bronkotabs - False positive for Amphetamines, Heroin, Opiates (Ref: 1, 11) Dronabinol (Marinol) - False positives for THC (Ref: 16, 18) Buprenex® contains synthetic opiates (Ref: 18) Buprenorphine contains synthetic opiates (Ref: 18) Bupropion (Wellbutrin) - false positive for Amphetamines (Ref: 12, 31, 32) Edecrin - False positive for THC, Marijuana (Ref: 3, 18) Cafergot® - false positive for LSD (Ref: 3, 18) Efavirenz - False positive for THC, Marijuana (Ref: 32) Effexor Tablets (venlafaxine hydrochloride) - false positive for PCP (Ref: 27, 33) Maximum Strength Tylenol Sinus gelcaps - false positive for Amphetamines (Ref: Efidac/24 - false positive for Amphetamines (Ref: 3, 18) Efotamine - false positive for LSD (Ref: 3) Meclomen - False positive for THC, Marijuana (Ref: 3, 18) Elavil - False positives for opiates for up to three days, LSD (Ref: 3, 26, 29) Mediprim - False positive for marijuana (Ref: 3) Eldepryl - false positive for Amphetamines and Ecstasy (Ref: 3, 11) Medipren - False positive for THC, Marijuana (Ref: 3, 18) Elderpryl® metabolizes to methamphetamine and amphetamine (Ref: 18) Mefenorex - false positive for Amphetamines and Ecstasy (Ref: 3, 11, 18) Menstrual cramp medications like Midol and Trendar (Ref: 26) Ephedrol, Ephedra (Ma Haung) - False positive for Amphetamines, Heroin, Mephentermine - false positive for Amphetamines and Ecstasy (Ref: 3, 11) Mesocarb - false positive for Meth and Ecstasy (Ref: 3, 11, 16, 18) Ephedrine - false positive for Amphetamines, Meth, and Ecstasy (Ref: 2, 3, 11, Methadone contains synthetic opiates (Ref: 18) Methoxyphenamine - false positive for Amphetamines and Ecstasy (Ref: 3, 11) Empirin w/codeine - false positive for Morphine, Opioids (Ref: 1, 3, 20) Methphenidate - false positive for Amphetamines and Ecstasy (Ref: 11) Enoxacin - false-positive for opiates (Ref: 25, 28) Methylphenidate (Ritalin) is an Amphetamine (Ref: 3, 18, 32) Ergostat® - false positive for LSD (Ref: 3, 18) Methysergiside - False positive for LSD (Ref: 3) Estasule Minus - False positive for Amphetamines, Heroin, Opiates (Ref: 1) Midol - False positive for THC, Marijuana (Ref: 3, 18, 26, 29) Etafediabe - false positive for Amphetamines, Meth and Ecstasy (Ref: 3, 11, 16) Mini-thins - false positives for Amphetamines and Ecstasy (Ref: 20) Ethylamphetamine metabolizes to amphetamine (Ref: 18) Morazone - false positive for Meth and Ecstasy (Ref: 3, 11, 16) Excedrin IB - False positives for Marijuana (Cannabis) THC (Ref: 3, 16, 18) Morax - False positive for Amphetamines, Heroin, Opiates (Ref: 1) Ephedra - false positives for Amphetamines and Ecstasy (Ref: 20, 22) Motrin - False positive for THC, Marijuana (Ref: 1, 3, 16, 18, 20, 26, 29) Ephedrine-based compounds - false positives for Amphetamines and Ecstasy MS Contin Tablets® contains morphine (Ref: 18) Famprofazone - false positive for Amphetamines and Ecstasy (Ref: 3, 11, 18) Feldene - False positives for THC (Ref: 3, 18) Mudrane GC® contains barbiturates (Ref: 18) Fencamine metabolizes to methamphetamine and amphetamine (Ref: 18) Naldecon - False positive for Morphine (Ref: 1) Fenelylline - false positive for Amphetamines and Ecstasy (Ref: 3, 11, 18) Nalfon - False positive for Marijuana, Amphetamines, Barbituates, Fenfluramine - false positive for Ecstasy (Ref: 3, 11) Benzodiazephines, Methaqualone (Ref: 1, 3, 7, 18) Fenoprofin - false positive for Marijuana, Amphetamines, Barbiturates (Ref: 1, 7) Naprosyn - False positive for THC, Marijuana (Ref: 1, 3, 18) Fenproporex metabolizes to amphetamine (Ref: 18) Naproxen (Aleve) - False positive for THC, Marijuana (Ref: 1, 3, 16, 21) Fenproyorex - false positive for Amphetamines and Ecstasy (Ref: 3, 11) Finedal® metabolizes to amphetamine (Ref: 18) Nasal sprays (Vicks inhaler, Afrin) - false positive for Amphetamines and Ecstasy Fiorinal w/codeine - false positive for Morphine (Ref: 1, 3, 18, 20) Navonaprox - False positive for THC, Marijuana (Ref: 1) Fluoroquinolone antibiotics - false positive for opiates (Ref: 28, 32) Nembutal Sodium contains barbiturates (Ref: 18) Fluoxetine - false positives for amphetamines (Ref: 31) Neosynephren - false positive reading for Amphetamines (Ref: 26, 29) Flurazepam contains benzodiazepines (Ref: 18) Neosynephrine - False positive for Amphetamines (Ref: 3, 18, 26) Flurbiprofen - false positive for marijuana (Ref: 3) No Drowsiness Sinarest Tablets (Ref: 3, 18) Nonprescription products that contain opium (i.e., morphine) (Ref: 18) Fluspirilene may test positive for amphetamines (Ref: 26) Furfenorex metabolizes to methamphetamine and amphetamine (Ref: 18) Novahistine DH® contains codeine (Ref: 18) Novahistine Expectorant® contains codeine (Ref: 18) Genpril - false positive for THC, Marijuana (Ref: 3, 18) NSAIDS - False positive for THC, Marijuana (Ref: 3, 18, 20, 32) (Ref. 22 says NO) Gradumet® contains d-methamphetamine (Ref: 18) Nucofed Expectorant contains codeine (Ref: 18) Haltran - false positive for THC, Marijuana (Ref: 3, 18) Numorphan® contains synthetic opiates (Ref: 18) Hamantashen may test positive for opiates. (Ref: 13) Nuprin - False positive for THC (Ref: 3, 16, 18, 20, 26, 29) Hempseed Oil - false positive for THC (Ref: 3, 16, 21, 29) Nyquil - false positive for Amphetamines, Heroin, Opiates, Morphine, Meth, Hold Cough Suppressant - false positive for Heroin, Opiates, Morphine (Ref: 1) Ecstasy (Ref: 1, 3, 11, 14, 16, 18, 19, 20, 26, 29) Homatropine Methylbromide contains synthetic opiates (Ref: 18) Hycodan® contains synthetic opiates (Ref: 18) Ofloxacin (antibiotic) - false positives for opiates( Ref: 25, 28) Hydergine - false positive for LSD (Ref: 3) Hydrocodone Bitartrate contains synthetic opiates (Ref: 18) Ornade - False positive for Amphetamines (Ref: 3, 18) Hydrocodone contains synthetic opiates (Ref: 18) Ortain - false positive for Amphetamines (Ref: 2, 7, 11) Hydromorphone contains synthetic opiates (Ref: 18) Orudis KT - False positives for THC (Ref: 3, 16, 18) Hydroymethamphetamone - false positive for Amphetamines (Ref: 3) Ibuprin - false positive for marijuana (Ref: 3) OTC diet aids with phenylpropanolamine (Dexatrim, Accutrim) (Ref: 11) Ibuprofen - False positive for Marijuana (THC) (Ref: 1, 3, 16, 18, 29) (Ref. 22 Over-the-counter nasal sprays (See Vicks inhaler, Afrin) (Ref: 11, 16, 18, 20) Oxaprozin - False positive for THC, Marijuana, Benzodiazepines (Ref: 3, 18, 34) Ifenoprofen - False positive for THC, Marijuana (Ref: 3, 13, 18, 21, 26) Oxazepam contains benzodiazepines (Ref: 18) Oxycodone contains synthetic opiates (Ref: 18) Indocin - False positive for THC, Marijuana (Ref: 3, 18) Oxymorphone contains synthetic opiates (Ref: 18) Infantol Pink ® contains opium/morphine (Ref: 18) Pamprin® - False positive for THC, Marijuana (Ref: 3, 18, 20) Paracodine® contains synthetic opiates (Ref: 18) Isoclor Expectorant contains codeine (Ref: 18) Paregoric contains opium/morphine (Ref: 18) Par-Glycerol-C (CV) contains codeine (Ref: 18) Kaodene with Paregoric® contains opium/morphine (Ref: 18) Pedacare - False positive for Opioids (Ref: 3) Kenesed® contains barbiturates (Ref: 18) Ketamine - False positive for PCP (Ref: 16, 32) Pefloxacin - false positive for Opiates (Ref: 25, 28) Ketoprofen - False positive for THC (Ref: 3, 16, 18) Pemoline - false positive for Amphetamines and Ecstasy (Ref: 3, 11) Kidney disease - false positive for Cocaine (Ref: 3, 16, 20) Pentobarbital Sodium contains barbiturates (Ref: 18) Kidney infection - false positive for Amphetamines, THC, Ecstasy, and Opiates Percocet - will test positive (not false) for opiates (Ref: 3, 20) Percodan® contains synthetic opiates (Ref: 3, 18, 20) Klonopin® contains benzodiazepines (Ref: 18) Percovil - will test positive (not false) for opiates (Ref: 20) Levofloxacin (antibiotic) - false positives for opiates (Ref: 25, 28) Libritab® contains benzodiazepines (Ref: 18) Librium® contains benzodiazepines (Ref: 18) Phendimetrazine - false positive for Amphetamines and Ecstasy (Ref: 3, 11) Limbitrol® contains benzodiazepines (Ref: 18) Lisuride - false positive for LSD (Ref: 3) Phenegan-D - False positive for Amphetamines, Ecstasy (MDMA), Meth (Ref: 3, Liver Disease - false positive for Opiates, Ecstasy, THC and Amphetamines (Ref: Phenergan VC® contains codeine (Ref: 18) Lodine - False positive for THC, Marijuana (Ref: 3, 18, 20) Phenergan® - False positive for THC (Ref: 3, 16, 18) Phenobarbital contains barbiturates (Ref: 18, 20) Loprazolam contains benzodiazepines (Ref: 18) Phenmetrazine - false positive for Amphetamines and Ecstasy (Ref: 3, 11) Lorazepam contains benzodiazepines (Ref: 18) Phentermine - false positive for Amphetamines and Ecstasy on urine tests (Ref: Luminal® contains barbiturates (Ref: 18) Phenylephrine - False positive for Amphetamines (Ref: 3, 18) Lysergol - false positive for LSD (Ref: 3, 18) Phenylpropanolamine - false positive for amphetamines (Ref: 3, 18, 22, 30, 32) Ma Huang (Ephedra sinica) - false positives for Amphetamines and Ecstasy (Ref: Phenylephrine - false positive for Amphetamines (Ref: 11) Phenylpropanolamine (PPA) - False positive for Meth (Ref: 11, 16) Marax - False positive for Ecstasy (MDMA), Meth (Ref: 3, 11, 16, 18) Phenypropanolamine - false positive reading for Amphetamines (Ref: 29) Margestic - false positive for Opioids (Ref: 3) Phenypropan-Olamine - false positive for Amphetamines (Ref: 2, 7) (This is an Marinol® false positive for Marijuana (THC) (Ref: 3, 18) active ingredient in Actifed, Alka-Seltzer, Alka-Selzer Plus, Allerest, Caldecon, Maximum Strength Sinus Gelcaps (Ref: 18) Contac, Dietac, Dimetapp, 4-Way Nasal Spray, Ortain, Sinarest, Triaminicin) Maximum Strength Sine-aid - false positive for Amphetamines (Ref: 3) Pholedrine - false positive for Amphetamines, Meth and Ecstasy (Ref: 3, 11, 16) Maximum Strength Sudafed Sinus - false positive for Amphetamines (Ref: 3) Pondinil® metabolizes to amphetamine (Ref: 18) Poppy Seeds contain morphine - positive for Heroin (MDMA), Opiates (Ref: 3, 16, Vicks Formula 44M - false positive for heroin (Ref: 1, 14, 26, 29) Vicks Cough Syrup - false positive for Heroin, Opiates, Morphine (Ref: 1) Prenylamine metabolizes to amphetamine (Ref: 18) Vicks Inhaler - False positive for Ecstasy (MDMA), Meth (Ref: 3, 11, 16, 18) Prescription medications that contain codeine (Ref: 18) Vicks Nyquil - False positive for Ecstasy (MDMA), Meth (Ref: 3, 11, 16, 18) Prescription sleeping pills will test positive for Benzodiazepines (Ref: 3, 20) Vicodin ES® contains synthetic opiates (Ref: 3, 18) Vitamin B2 - False positive for THC (Ref: 3, 16, 18) Primatine Tablets - False positive for Ecstasy (MDMA), Meth (Ref: 3, 11, 16, 18) Voltaren - False positive for THC, Marijuana (Ref: 3, 18) Promethazine - False positive for THC (Ref: 3, 16, 18) Wellbutrin - false positive for Amphetamines (Ref: 12) Promethegan - False positive for THC (Ref: 3, 16, 18) Wigraine® - False positive for LSD (Ref: 3, 18) Wygesic - will test positive (not false) for opiates (Ref: 20) Propoxyphene contains synthetic opiates (Ref: 18) Xanax® contains benzodiazepines (Ref: 18) Propylephedrine - false positive for Amphetamines and Ecstasy (Ref: 3, 11, 18) Zantac - false positive for Amphetamines (Ref: 30) Pseudoephederine - false positives for Amphetamines and Ecstasy (Ref: 20) Zoloft - false positive for benzodiazepines (Ref: 31) Pseudoephedrine may be detected as amphetamines (speed) (Ref: 3, 11, 18, 21, 30) Pseudoephedrineare - false positive for amphetamines (Ref: 22) Purim cookies contain poppy seeds, false positive for opiates (Ref: 13, 16, 17) Quadrinal® - False positive for Amphetamines, Heroin, Opiates (Ref: 1, 18) Quelidrine - False positive for Amphetamines, Heroin, Opiates (Ref: 1) Quelichine - False positive for Amphetamines, Heroin, Opiates (Ref: 1) Quibron Plus - False positive for Amphetamines, Heroin, Opiates (Ref: 1) Quinine in Tonic water - positive for opiates (Ref: 26, 29, 32) Quinolones (Ref: 25) Ranitidine - false positive for Amphetamines (Ref: 32) Redux - false positive for Amphetamines, Meth and Ecstasy (Ref: 3, 11, 16) Relafen - False positive for Marijuana (Ref: 3) Rescudose contains morphine (Ref: 18) Rexatal® contains barbiturates (Ref: 18) Riboflavin (vitamin B2) - False positive for THC (Ref: 3, 16, 18, 21) Rifampin - False positive for Opiates (Ref: 25, 32) Rifampicin (antibiotic) - False positive for Opioids (Ref: 3) Ritalin® is an Amphetamine (Ref: 18) Rivotril® contains benzodiazepines (Ref: 18) Robitussin - positive for opiates (Ref: 20) Robitussin A-C® contains codeine (Ref: 18) Robitussin Cold and Flu - False positive for Ecstasy (MDMA), Meth (Ref: 3, 11, 16, 18) Robitussin DAC® contains codeine (Ref: 18) Robitussin DM - false positive for Heroin, Opiates, Morphine (Ref: 1) Romilar - false positive for Heroin, Opiates, Morphine (Ref: 1) Roxanol contains morphine (Ref: 18) Rufin - False positive for THC, Marijuana (Ref: 1, 3) Secobarbital contains barbiturates (Ref: 18) Secobarbital Sodium Bellergal-S® contains barbiturates (Ref: 18) Seconal Sodium contains barbiturates (Ref: 18) Selegiline (Eldepryl) - false positive for Meth, Amphetamines and Ecstasy (Ref: 3, 11, 18) Serax® contains benzodiazepines (Ref: 18) Shampoo containing hemp (Ref: 29) Silexin - false positive for Heroin, Opiates, Morphine (Ref: 1) Sinarest - false positive for Amphetamines, Morphine (Ref: 1, 2, 7) Sine-Aid Tablets Maximum Strength (Ref: 18) Sine-Off - False positive for Morphine (Ref: 1) Sinex - False positive for Amphetamines (Ref: 3) Sinubid - False positive for Morphine (Ref: 1) Sinus Excedrin Extra Strength Caplets - False positive for Amphetamines (Ref: 3, 18) Solfoton® contains barbiturates (Ref: 18) Soma with Codeine (Ref: 18) Sparfloxacin (Ref: 25) St. Joseph's Cough Syrup - false positive for Heroin, Opiates, Morphine (Ref: 1) Sudafed - false positive for Amphetamines, Meth and Ecstasy (Ref: 3, 11, 16, 18, 20, 26, 29) Synalgos DC® contains synthetic opiates (Ref: 18) Tanning lotion containing hemp (Ref: 2) Tavist-D - false positive for Meth and Ecstasy (Ref: 3, 11, 16, 18) Tedral - False positive for Amphetamines, Heroin, Opiates (Ref: 1) Tegisec® metabolizes to amphetamine (Ref: 18) Tolectin® - False positive for THC, Marijuana (Ref: 3, 18, 20) Tonic water - False positive for cocaine (Ref: 16, 18) Trazedone (Ref: 32) Trendar Cramp Relief Formula - False positive for THC, Marijuana (Ref: 3, 18, 26, 29) Triaminic 12 - False positive for Amphetamines (Ref: 3, 18) Triaminic Expectorant with Codeine® (Ref: 18) TriazolamHalcion® contains benzodiazepines (Ref: 18) Triaminicin - false positive for Amphetamines, Morphine (Ref: 1, 2, 7) Triminicol - False positive for Morphine (Ref: 1) Triprolidine - False positive for LSD (Ref: 3, 18) Trucal - false positive for Heroin, Opiates, Morphine (Ref: 1) Tussagesic - False positive for Morphine (Ref: 1) Tussaminic - false positive for Heroin, Opiates, Morphine (Ref: 1) Tussar 2® contains codeine (Ref: 18) Tussar SF® contains codeine (Ref: 18) Tussi-Organiden contains codeine (Ref: 18) Tussinic - False positive for Heroin, Opiates, Morphine (Ref: 1) Tylenol (acetaminophen) with Codeine® (Ref: 3, 18, 20) Tylenol 3 - can cause false positive for opiates (Ref: 20) Tylenol 4 - can cause false positive for opiates (Ref: 20) Tylenol Sinus - false positives for Amphetamines and Ecstasy (Ref: 20) Valium® contains benzodiazepines (Ref: 18, 20) Valrelease® contains benzodiazepines (Ref: 18) Venlafaxine hydrochloride - false positive for PCP (Ref: 27)

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